65136404 has 6 divisors (see below), whose sum is σ = 113988714. Its totient is φ = 32568200.

The previous prime is 65136397. The next prime is 65136431. The reversal of 65136404 is 40463156.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 57002500 + 8133904 = 7550^2 + 2852^2 .

It is a super-2 number, since 2×65136404² = 8485502252102432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8142047 + ... + 8142054.

It is an arithmetic number, because the mean of its divisors is an integer number (18998119).

Almost surely, 2^65136404 is an apocalyptic number.

It is an amenable number.

65136404 is a deficient number, since it is larger than the sum of its proper divisors (48852310).

65136404 is a wasteful number, since it uses less digits than its factorization.

65136404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16284105 (or 16284103 counting only the distinct ones).

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

The square root of 65136404 is about 8070.7127318472. The cubic root of 65136404 is about 402.3536322091.

The spelling of 65136404 in words is "sixty-five million, one hundred thirty-six thousand, four hundred four".