64612771 has 2 divisors, whose sum is σ = 64612772. Its totient is φ = 64612770.

The previous prime is 64612759. The next prime is 64612781. The reversal of 64612771 is 17721646.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64612771 - 2⁵ = 64612739 is a prime.

It is not a weakly prime, because it can be changed into another prime (64612781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32306385 + 32306386.

It is an arithmetic number, because the mean of its divisors is an integer number (32306386).

Almost surely, 2^64612771 is an apocalyptic number.

64612771 is a deficient number, since it is larger than the sum of its proper divisors (1).

64612771 is an equidigital number, since it uses as much as digits as its factorization.

64612771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112, while the sum is 34.

The square root of 64612771 is about 8038.2069518021. The cubic root of 64612771 is about 401.2725534759.

The spelling of 64612771 in words is "sixty-four million, six hundred twelve thousand, seven hundred seventy-one".