64707077 has 4 divisors (see below), whose sum is σ = 65279820. Its totient is φ = 64134336.

The previous prime is 64707037. The next prime is 64707089. The reversal of 64707077 is 77070746.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18887716 + 45819361 = 4346^2 + 6769^2 .

It is a cyclic number.

It is not a de Polignac number, because 64707077 - 2¹⁴ = 64690693 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64707077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64707037) 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, 286202 + ... + 286427.

It is an arithmetic number, because the mean of its divisors is an integer number (16319955).

Almost surely, 2^64707077 is an apocalyptic number.

It is an amenable number.

64707077 is a deficient number, since it is larger than the sum of its proper divisors (572743).

64707077 is a wasteful number, since it uses less digits than its factorization.

64707077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572742.

The product of its (nonzero) digits is 57624, while the sum is 38.

The square root of 64707077 is about 8044.0709221140. The cubic root of 64707077 is about 401.4676852468.

The spelling of 64707077 in words is "sixty-four million, seven hundred seven thousand, seventy-seven".