65155984 has 10 divisors (see below), whose sum is σ = 126239750. Its totient is φ = 32577984.

The previous prime is 65155973. The next prime is 65155999. The reversal of 65155984 is 48955156.

It can be written as a sum of positive squares in only one way, i.e., 58186384 + 6969600 = 7628^2 + 2640^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 65155984.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2036109 + ... + 2036140.

It is an arithmetic number, because the mean of its divisors is an integer number (12623975).

Almost surely, 2^65155984 is an apocalyptic number.

It is an amenable number.

65155984 is a deficient number, since it is larger than the sum of its proper divisors (61083766).

65155984 is a wasteful number, since it uses less digits than its factorization.

65155984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4072257 (or 4072251 counting only the distinct ones).

The product of its digits is 216000, while the sum is 43.

The square root of 65155984 is about 8071.9256686369. The cubic root of 65155984 is about 402.3939439978.

The spelling of 65155984 in words is "sixty-five million, one hundred fifty-five thousand, nine hundred eighty-four".