690732942 has 16 divisors (see below), whose sum is σ = 1404881280. Its totient is φ = 226341752.

The previous prime is 690732919. The next prime is 690732947. The reversal of 690732942 is 249237096.

It is a happy number.

It is a super-2 number, since 2×690732942² = 954223994327950728, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 690732894 and 690732903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690732947) 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, 975258 + ... + 975965.

It is an arithmetic number, because the mean of its divisors is an integer number (87805080).

Almost surely, 2^690732942 is an apocalyptic number.

690732942 is an abundant number, since it is smaller than the sum of its proper divisors (714148338).

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

690732942 is a wasteful number, since it uses less digits than its factorization.

690732942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1951287.

The product of its (nonzero) digits is 163296, while the sum is 42.

The square root of 690732942 is about 26281.7986827386. The cubic root of 690732942 is about 883.9683647558.

The spelling of 690732942 in words is "six hundred ninety million, seven hundred thirty-two thousand, nine hundred forty-two".