65612944 has 10 divisors (see below), whose sum is σ = 127125110. Its totient is φ = 32806464.

The previous prime is 65612927. The next prime is 65612959. The reversal of 65612944 is 44921656.

It can be written as a sum of positive squares in only one way, i.e., 61152400 + 4460544 = 7820^2 + 2112^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2050389 + ... + 2050420.

It is an arithmetic number, because the mean of its divisors is an integer number (12712511).

Almost surely, 2^65612944 is an apocalyptic number.

It is an amenable number.

65612944 is a deficient number, since it is larger than the sum of its proper divisors (61512166).

65612944 is a wasteful number, since it uses less digits than its factorization.

65612944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4100817 (or 4100811 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 65612944 is about 8100.1817263565. The cubic root of 65612944 is about 403.3324596813.

The spelling of 65612944 in words is "sixty-five million, six hundred twelve thousand, nine hundred forty-four".