664015077 has 20 divisors (see below), whose sum is σ = 1082100096. Its totient is φ = 402432840.

The previous prime is 664015057. The next prime is 664015103. The reversal of 664015077 is 770510466.

664015077 is a `hidden beast` number, since 6 + 640 + 1 + 5 + 0 + 7 + 7 = 666.

It is not a de Polignac number, because 664015077 - 2¹⁴ = 663998693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664015057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 371733 + ... + 373514.

Almost surely, 2^664015077 is an apocalyptic number.

It is an amenable number.

664015077 is a deficient number, since it is larger than the sum of its proper divisors (418085019).

664015077 is a wasteful number, since it uses less digits than its factorization.

664015077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745270 (or 745261 counting only the distinct ones).

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

The square root of 664015077 is about 25768.4900023265. The cubic root of 664015077 is about 872.4207373474.

The spelling of 664015077 in words is "six hundred sixty-four million, fifteen thousand, seventy-seven".