64168077 has 4 divisors (see below), whose sum is σ = 85557440. Its totient is φ = 42778716.

The previous prime is 64168063. The next prime is 64168079. The reversal of 64168077 is 77086146.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 64168077 - 2²³ = 55779469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64168079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10694677 + ... + 10694682.

It is an arithmetic number, because the mean of its divisors is an integer number (21389360).

Almost surely, 2^64168077 is an apocalyptic number.

It is an amenable number.

64168077 is a deficient number, since it is larger than the sum of its proper divisors (21389363).

64168077 is a wasteful number, since it uses less digits than its factorization.

64168077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21389362.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 64168077 is about 8010.4979245987. The cubic root of 64168077 is about 400.3498543323.

The spelling of 64168077 in words is "sixty-four million, one hundred sixty-eight thousand, seventy-seven".