690273980 has 24 divisors (see below), whose sum is σ = 1581355440. Its totient is φ = 251008640.

The previous prime is 690273973. The next prime is 690273989. The reversal of 690273980 is 89372096.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690273989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1568585 + ... + 1569024.

It is an arithmetic number, because the mean of its divisors is an integer number (65889810).

Almost surely, 2^690273980 is an apocalyptic number.

It is an amenable number.

690273980 is an abundant number, since it is smaller than the sum of its proper divisors (891081460).

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

690273980 is a wasteful number, since it uses less digits than its factorization.

690273980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3137629 (or 3137627 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 690273980 is about 26273.0656757067. The cubic root of 690273980 is about 883.7725351978.

The spelling of 690273980 in words is "six hundred ninety million, two hundred seventy-three thousand, nine hundred eighty".