64958645 has 4 divisors (see below), whose sum is σ = 77950380. Its totient is φ = 51966912.

The previous prime is 64958629. The next prime is 64958651. The reversal of 64958645 is 54685946.

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 30184036 + 34774609 = 5494^2 + 5897^2 .

It is a cyclic number.

It is not a de Polignac number, because 64958645 - 2⁴ = 64958629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64958645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6495860 + ... + 6495869.

It is an arithmetic number, because the mean of its divisors is an integer number (19487595).

Almost surely, 2^64958645 is an apocalyptic number.

It is an amenable number.

64958645 is a deficient number, since it is larger than the sum of its proper divisors (12991735).

64958645 is a wasteful number, since it uses less digits than its factorization.

64958645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12991734.

The product of its digits is 1036800, while the sum is 47.

The square root of 64958645 is about 8059.6926120045. The cubic root of 64958645 is about 401.9872874539.

The spelling of 64958645 in words is "sixty-four million, nine hundred fifty-eight thousand, six hundred forty-five".