690666882 has 8 divisors (see below), whose sum is σ = 1381333776. Its totient is φ = 230222292.

The previous prime is 690666881. The next prime is 690666883. The reversal of 690666882 is 288666096.

It is an interprime number because it is at equal distance from previous prime (690666881) and next prime (690666883).

It is a sphenic number, since it is the product of 3 distinct primes.

690666882 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (690666881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57555568 + ... + 57555579.

It is an arithmetic number, because the mean of its divisors is an integer number (172666722).

Almost surely, 2^690666882 is an apocalyptic number.

690666882 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

690666882 is a wasteful number, since it uses less digits than its factorization.

690666882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115111152.

The product of its (nonzero) digits is 1492992, while the sum is 51.

The square root of 690666882 is about 26280.5418893903. The cubic root of 690666882 is about 883.9401836706.

The spelling of 690666882 in words is "six hundred ninety million, six hundred sixty-six thousand, eight hundred eighty-two".