690896040 has 32 divisors (see below), whose sum is σ = 2072688480. Its totient is φ = 184238912.

The previous prime is 690896033. The next prime is 690896071. The reversal of 690896040 is 40698096.

It is a junction number, because it is equal to n+sod(n) for n = 690895983 and 690896001.

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, 2878614 + ... + 2878853.

It is an arithmetic number, because the mean of its divisors is an integer number (64771515).

Almost surely, 2^690896040 is an apocalyptic number.

690896040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

690896040 is an abundant number, since it is smaller than the sum of its proper divisors (1381792440).

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

690896040 is a wasteful number, since it uses less digits than its factorization.

690896040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5757481 (or 5757477 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 690896040 is about 26284.9013694174. The cubic root of 690896040 is about 884.0379343958.

The spelling of 690896040 in words is "six hundred ninety million, eight hundred ninety-six thousand, forty".