690323076 has 81 divisors (see below), whose sum is σ = 1819277733. Its totient is φ = 220701600.

The previous prime is 690323021. The next prime is 690323077. The reversal of 690323076 is 670323096.

The square root of 690323076 is 26274.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 361988676 + 328334400 = 19026^2 + 18120^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 690323076.

It is not an unprimeable number, because it can be changed into a prime (690323077) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 4571601 + ... + 4571751.

Almost surely, 2^690323076 is an apocalyptic number.

690323076 is the 26274-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 690323076

690323076 is an abundant number, since it is smaller than the sum of its proper divisors (1128954657).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

690323076 is a wasteful number, since it uses less digits than its factorization.

690323076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 36.

The cubic root of 690323076 is about 883.7934875873.

Multiplying 690323076 by its sum of digits (36), we get a square (24851630736 = 157644²).

690323076 divided by its sum of digits (36) gives a square (19175641 = 4379²).

The spelling of 690323076 in words is "six hundred ninety million, three hundred twenty-three thousand, seventy-six".