690054156 has 72 divisors (see below), whose sum is σ = 1906985808. Its totient is φ = 208656000.

The previous prime is 690054151. The next prime is 690054193. The reversal of 690054156 is 651450096.

690054156 is a `hidden beast` number, since 69 + 0 + 0 + 541 + 56 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 690054156.

It is not an unprimeable number, because it can be changed into a prime (690054151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 212626 + ... + 215846.

It is an arithmetic number, because the mean of its divisors is an integer number (26485914).

Almost surely, 2^690054156 is an apocalyptic number.

690054156 is a gapful number since it is divisible by the number (66) 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 690054156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (953492904).

690054156 is an abundant number, since it is smaller than the sum of its proper divisors (1216931652).

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

690054156 is a wasteful number, since it uses less digits than its factorization.

690054156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3783 (or 3778 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 690054156 is about 26268.8818947438. The cubic root of 690054156 is about 883.6787101149.

The spelling of 690054156 in words is "six hundred ninety million, fifty-four thousand, one hundred fifty-six".