64616501 has 2 divisors, whose sum is σ = 64616502. Its totient is φ = 64616500.

The previous prime is 64616479. The next prime is 64616521. The reversal of 64616501 is 10561646.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49014001 + 15602500 = 7001^2 + 3950^2 .

It is a cyclic number.

It is not a de Polignac number, because 64616501 - 2¹⁰ = 64615477 is a prime.

It is a Chen prime.

It is equal to p_3819305 and since 64616501 and 3819305 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64616521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32308250 + 32308251.

It is an arithmetic number, because the mean of its divisors is an integer number (32308251).

Almost surely, 2^64616501 is an apocalyptic number.

It is an amenable number.

64616501 is a deficient number, since it is larger than the sum of its proper divisors (1).

64616501 is an equidigital number, since it uses as much as digits as its factorization.

64616501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 64616501 is about 8038.4389653713. The cubic root of 64616501 is about 401.2802749516.

The spelling of 64616501 in words is "sixty-four million, six hundred sixteen thousand, five hundred one".