690315444 has 72 divisors (see below), whose sum is σ = 2147658240. Its totient is φ = 182060352.

The previous prime is 690315433. The next prime is 690315487. The reversal of 690315444 is 444513096.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a junction number, because it is equal to n+sod(n) for n = 690315399 and 690315408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102084 + ... + 108635.

Almost surely, 2^690315444 is an apocalyptic number.

It is an amenable number.

690315444 is an abundant number, since it is smaller than the sum of its proper divisors (1457342796).

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

690315444 is a wasteful number, since it uses less digits than its factorization.

690315444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210749 (or 210744 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 690315444 is about 26273.8547609596. The cubic root of 690315444 is about 883.7902305921.

The spelling of 690315444 in words is "six hundred ninety million, three hundred fifteen thousand, four hundred forty-four".