65631404 has 6 divisors (see below), whose sum is σ = 114854964. Its totient is φ = 32815700.

The previous prime is 65631403. The next prime is 65631413. The reversal of 65631404 is 40413656.

It is a happy number.

It is a super-2 number, since 2×65631404² = 8614962382022432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65631403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8203922 + ... + 8203929.

It is an arithmetic number, because the mean of its divisors is an integer number (19142494).

Almost surely, 2^65631404 is an apocalyptic number.

It is an amenable number.

65631404 is a deficient number, since it is larger than the sum of its proper divisors (49223560).

65631404 is a wasteful number, since it uses less digits than its factorization.

65631404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16407855 (or 16407853 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 65631404 is about 8101.3211268286. The cubic root of 65631404 is about 403.3702815836.

The spelling of 65631404 in words is "sixty-five million, six hundred thirty-one thousand, four hundred four".