690725404800 has 384 divisors, whose sum is σ = 2565613915200. Its totient is φ = 181442764800.

The previous prime is 690725404781. The next prime is 690725404829. The reversal of 690725404800 is 8404527096.

It is a happy number.

690725404800 is a `hidden beast` number, since 69 + 0 + 7 + 2 + 540 + 48 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-2 number, since 2×690725404800² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 5729140 + ... + 5848460.

Almost surely, 2^690725404800 is an apocalyptic number.

690725404800 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 690725404800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1282806957600).

690725404800 is an abundant number, since it is smaller than the sum of its proper divisors (1874888510400).

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

690725404800 is a wasteful number, since it uses less digits than its factorization.

690725404800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119421 (or 119398 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 690725404800 in words is "six hundred ninety billion, seven hundred twenty-five million, four hundred four thousand, eight hundred".