65377040 has 40 divisors (see below), whose sum is σ = 158614848. Its totient is φ = 25013120.

The previous prime is 65377033. The next prime is 65377057. The reversal of 65377040 is 4077356.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 65376988 and 65377006.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15926 + ... + 19605.

Almost surely, 2^65377040 is an apocalyptic number.

It is an amenable number.

65377040 is an abundant number, since it is smaller than the sum of its proper divisors (93237808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65377040 is a wasteful number, since it uses less digits than its factorization.

65377040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35567 (or 35561 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 65377040 is about 8085.6069654665. The cubic root of 65377040 is about 402.8485002972.

The spelling of 65377040 in words is "sixty-five million, three hundred seventy-seven thousand, forty".