690117549520 has 160 divisors (see below), whose sum is σ = 1932767723520. Its totient is φ = 224141998080.

The previous prime is 690117549497. The next prime is 690117549553. The reversal of 690117549520 is 25945711096.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 459825 + ... + 1261615.

It is an arithmetic number, because the mean of its divisors is an integer number (12079798272).

Almost surely, 2^690117549520 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 690117549520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (966383861760).

690117549520 is an abundant number, since it is smaller than the sum of its proper divisors (1242650174000).

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

690117549520 is a wasteful number, since it uses less digits than its factorization.

690117549520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801893 (or 801887 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 49.

The spelling of 690117549520 in words is "six hundred ninety billion, one hundred seventeen million, five hundred forty-nine thousand, five hundred twenty".