690472512 has 140 divisors (see below), whose sum is σ = 2136135936. Its totient is φ = 220112640.

The previous prime is 690472487. The next prime is 690472537. The reversal of 690472512 is 215274096.

It is an interprime number because it is at equal distance from previous prime (690472487) and next prime (690472537).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 116337 + ... + 122127.

Almost surely, 2^690472512 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 690472512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1068067968).

690472512 is an abundant number, since it is smaller than the sum of its proper divisors (1445663424).

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

690472512 is a wasteful number, since it uses less digits than its factorization.

690472512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5838 (or 5819 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 690472512 is about 26276.8436460698. The cubic root of 690472512 is about 883.8572553309.

The spelling of 690472512 in words is "six hundred ninety million, four hundred seventy-two thousand, five hundred twelve".