64577061 has 16 divisors (see below), whose sum is σ = 98757120. Its totient is φ = 41662080.

The previous prime is 64577017. The next prime is 64577069. The reversal of 64577061 is 16077546.

64577061 is a `hidden beast` number, since 645 + 7 + 7 + 0 + 6 + 1 = 666.

It is not a de Polignac number, because 64577061 - 2⁷ = 64576933 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64577069) 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, 37740 + ... + 39413.

It is an arithmetic number, because the mean of its divisors is an integer number (6172320).

Almost surely, 2^64577061 is an apocalyptic number.

It is an amenable number.

64577061 is a deficient number, since it is larger than the sum of its proper divisors (34180059).

64577061 is a wasteful number, since it uses less digits than its factorization.

64577061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77193 (or 77187 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 64577061 is about 8035.9853782844. The cubic root of 64577061 is about 401.1986151335.

The spelling of 64577061 in words is "sixty-four million, five hundred seventy-seven thousand, sixty-one".