690530502 has 16 divisors (see below), whose sum is σ = 1381830912. Its totient is φ = 230048520.

The previous prime is 690530483. The next prime is 690530521. The reversal of 690530502 is 205035096.

It is an interprime number because it is at equal distance from previous prime (690530483) and next prime (690530521).

It is a self number, because there is not a number n which added to its sum of digits gives 690530502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20074 + ... + 42237.

It is an arithmetic number, because the mean of its divisors is an integer number (86364432).

Almost surely, 2^690530502 is an apocalyptic number.

690530502 is an abundant number, since it is smaller than the sum of its proper divisors (691300410).

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

690530502 is a wasteful number, since it uses less digits than its factorization.

690530502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64163.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 690530502 is about 26277.9470659334. The cubic root of 690530502 is about 883.8819985063.

Adding to 690530502 its reverse (205035096), we get a palindrome (895565598).

The spelling of 690530502 in words is "six hundred ninety million, five hundred thirty thousand, five hundred two".