690822636 has 24 divisors (see below), whose sum is σ = 1842193920. Its totient is φ = 197377872.

The previous prime is 690822619. The next prime is 690822647. The reversal of 690822636 is 636228096.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 4111956 + ... + 4112123.

It is an arithmetic number, because the mean of its divisors is an integer number (76758080).

Almost surely, 2^690822636 is an apocalyptic number.

It is an amenable number.

690822636 is an abundant number, since it is smaller than the sum of its proper divisors (1151371284).

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

690822636 is a wasteful number, since it uses less digits than its factorization.

690822636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8224093 (or 8224091 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 690822636 is about 26283.5050174059. The cubic root of 690822636 is about 884.0066251901.

The spelling of 690822636 in words is "six hundred ninety million, eight hundred twenty-two thousand, six hundred thirty-six".