64989707 has 2 divisors, whose sum is σ = 64989708. Its totient is φ = 64989706.

The previous prime is 64989677. The next prime is 64989719. The reversal of 64989707 is 70798946.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64989707 - 2⁶ = 64989643 is a prime.

It is not a weakly prime, because it can be changed into another prime (64989787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32494853 + 32494854.

It is an arithmetic number, because the mean of its divisors is an integer number (32494854).

Almost surely, 2^64989707 is an apocalyptic number.

64989707 is a deficient number, since it is larger than the sum of its proper divisors (1).

64989707 is an equidigital number, since it uses as much as digits as its factorization.

64989707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 64989707 is about 8061.6193782639. The cubic root of 64989707 is about 402.0513514923.

The spelling of 64989707 in words is "sixty-four million, nine hundred eighty-nine thousand, seven hundred seven".