690396471800 has 192 divisors, whose sum is σ = 1855388747520. Its totient is φ = 234015068160.

The previous prime is 690396471763. The next prime is 690396471827. The reversal of 690396471800 is 8174693096.

690396471800 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 830901²-1.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 161192459 + ... + 161196741.

It is an arithmetic number, because the mean of its divisors is an integer number (9663483060).

Almost surely, 2^690396471800 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 690396471800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (927694373760).

690396471800 is an abundant number, since it is smaller than the sum of its proper divisors (1164992275720).

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

690396471800 is a wasteful number, since it uses less digits than its factorization.

With its successor (690396471801) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (5590).

690396471800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5590 (or 5581 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 53.

The spelling of 690396471800 in words is "six hundred ninety billion, three hundred ninety-six million, four hundred seventy-one thousand, eight hundred".