690563432 has 64 divisors (see below), whose sum is σ = 1426992000. Its totient is φ = 311351040.

The previous prime is 690563413. The next prime is 690563473. The reversal of 690563432 is 234365096.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1262183 + ... + 1262729.

It is an arithmetic number, because the mean of its divisors is an integer number (22296750).

Almost surely, 2^690563432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 690563432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (713496000).

690563432 is an abundant number, since it is smaller than the sum of its proper divisors (736428568).

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

690563432 is a wasteful number, since it uses less digits than its factorization.

690563432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826 (or 822 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 38.

The square root of 690563432 is about 26278.5736294800. The cubic root of 690563432 is about 883.8960484633.

The spelling of 690563432 in words is "six hundred ninety million, five hundred sixty-three thousand, four hundred thirty-two".