690699772 has 48 divisors (see below), whose sum is σ = 1403297280. Its totient is φ = 291350592.

The previous prime is 690699721. The next prime is 690699791. The reversal of 690699772 is 277996096.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1019898 + ... + 1020574.

It is an arithmetic number, because the mean of its divisors is an integer number (29235360).

Almost surely, 2^690699772 is an apocalyptic number.

It is an amenable number.

690699772 is an abundant number, since it is smaller than the sum of its proper divisors (712597508).

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

690699772 is a wasteful number, since it uses less digits than its factorization.

690699772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210 (or 1208 counting only the distinct ones).

The product of its (nonzero) digits is 2571912, while the sum is 55.

The square root of 690699772 is about 26281.1676300731. The cubic root of 690699772 is about 883.9542147140.

The spelling of 690699772 in words is "six hundred ninety million, six hundred ninety-nine thousand, seven hundred seventy-two".