65440677 has 16 divisors (see below), whose sum is σ = 88704000. Its totient is φ = 42906864.

The previous prime is 65440621. The next prime is 65440691. The reversal of 65440677 is 77604456.

It is not a de Polignac number, because 65440677 - 2⁷ = 65440549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65440607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98974 + ... + 99632.

It is an arithmetic number, because the mean of its divisors is an integer number (5544000).

Almost surely, 2^65440677 is an apocalyptic number.

It is an amenable number.

65440677 is a deficient number, since it is larger than the sum of its proper divisors (23263323).

65440677 is a wasteful number, since it uses less digits than its factorization.

65440677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160.

The product of its (nonzero) digits is 141120, while the sum is 39.

The square root of 65440677 is about 8089.5412107239. The cubic root of 65440677 is about 402.9791667442.

The spelling of 65440677 in words is "sixty-five million, four hundred forty thousand, six hundred seventy-seven".