64461739 has 6 divisors (see below), whose sum is σ = 68476964. Its totient is φ = 60669600.

The previous prime is 64461731. The next prime is 64461743. The reversal of 64461739 is 93716446.

It is not a de Polignac number, because 64461739 - 2³ = 64461731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64461731) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111237 + ... + 111814.

Almost surely, 2^64461739 is an apocalyptic number.

64461739 is a deficient number, since it is larger than the sum of its proper divisors (4015225).

64461739 is a wasteful number, since it uses less digits than its factorization.

64461739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223085 (or 223068 counting only the distinct ones).

The product of its digits is 108864, while the sum is 40.

The square root of 64461739 is about 8028.8068229345. The cubic root of 64461739 is about 400.9596520785.

The spelling of 64461739 in words is "sixty-four million, four hundred sixty-one thousand, seven hundred thirty-nine".