64293961 has 2 divisors, whose sum is σ = 64293962. Its totient is φ = 64293960.

The previous prime is 64293923. The next prime is 64293973. The reversal of 64293961 is 16939246.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60217600 + 4076361 = 7760^2 + 2019^2 .

It is a cyclic number.

It is not a de Polignac number, because 64293961 - 2¹³ = 64285769 is a prime.

It is not a weakly prime, because it can be changed into another prime (64293991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32146980 + 32146981.

It is an arithmetic number, because the mean of its divisors is an integer number (32146981).

Almost surely, 2^64293961 is an apocalyptic number.

It is an amenable number.

64293961 is a deficient number, since it is larger than the sum of its proper divisors (1).

64293961 is an equidigital number, since it uses as much as digits as its factorization.

64293961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 40.

The square root of 64293961 is about 8018.3515138712. The cubic root of 64293961 is about 400.6114834935.

The spelling of 64293961 in words is "sixty-four million, two hundred ninety-three thousand, nine hundred sixty-one".