690659841 has 8 divisors (see below), whose sum is σ = 936488160. Its totient is φ = 452635712.

The previous prime is 690659839. The next prime is 690659857. The reversal of 690659841 is 148956096.

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

It is a cyclic number.

It is not a de Polignac number, because 690659841 - 2¹ = 690659839 is a prime.

It is a super-2 number, since 2×690659841² = 954022031940290562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (690659821) 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, 1950840 + ... + 1951193.

It is an arithmetic number, because the mean of its divisors is an integer number (117061020).

Almost surely, 2^690659841 is an apocalyptic number.

It is an amenable number.

690659841 is a deficient number, since it is larger than the sum of its proper divisors (245828319).

690659841 is a wasteful number, since it uses less digits than its factorization.

690659841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3902095.

The product of its (nonzero) digits is 466560, while the sum is 48.

The square root of 690659841 is about 26280.4079306239. The cubic root of 690659841 is about 883.9371798858.

The spelling of 690659841 in words is "six hundred ninety million, six hundred fifty-nine thousand, eight hundred forty-one".