690412896 has 240 divisors, whose sum is σ = 2182983264. Its totient is φ = 213497856.

The previous prime is 690412883. The next prime is 690412897. The reversal of 690412896 is 698214096.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690412897) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2205636 + ... + 2205948.

Almost surely, 2^690412896 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 690412896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1091491632).

690412896 is an abundant number, since it is smaller than the sum of its proper divisors (1492570368).

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

690412896 is a wasteful number, since it uses less digits than its factorization.

690412896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395 (or 378 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 690412896 is about 26275.7092387627. The cubic root of 690412896 is about 883.8318169295.

The spelling of 690412896 in words is "six hundred ninety million, four hundred twelve thousand, eight hundred ninety-six".