690882079 has 8 divisors (see below), whose sum is σ = 702928512. Its totient is φ = 678938520.

The previous prime is 690882041. The next prime is 690882107. The reversal of 690882079 is 970288096.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-690882079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690682079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12109 + ... + 39094.

It is an arithmetic number, because the mean of its divisors is an integer number (87866064).

Almost surely, 2^690882079 is an apocalyptic number.

690882079 is a deficient number, since it is larger than the sum of its proper divisors (12046433).

690882079 is a wasteful number, since it uses less digits than its factorization.

690882079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51437.

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 690882079 is about 26284.6357973627. The cubic root of 690882079 is about 884.0319797437.

The spelling of 690882079 in words is "six hundred ninety million, eight hundred eighty-two thousand, seventy-nine".