690088825 has 6 divisors (see below), whose sum is σ = 855710174. Its totient is φ = 552071040.

The previous prime is 690088807. The next prime is 690088829. The reversal of 690088825 is 528880096.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 15492096 + 674596729 = 3936^2 + 25973^2 .

It is not a de Polignac number, because 690088825 - 2¹⁷ = 689957753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (690088829) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13801752 + ... + 13801801.

Almost surely, 2^690088825 is an apocalyptic number.

It is an amenable number.

690088825 is a deficient number, since it is larger than the sum of its proper divisors (165621349).

690088825 is a wasteful number, since it uses less digits than its factorization.

690088825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27603563 (or 27603558 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 46.

The square root of 690088825 is about 26269.5417736968. The cubic root of 690088825 is about 883.6935088298.

The spelling of 690088825 in words is "six hundred ninety million, eighty-eight thousand, eight hundred twenty-five".