64556801 has 2 divisors, whose sum is σ = 64556802. Its totient is φ = 64556800.

The previous prime is 64556761. The next prime is 64556827. The reversal of 64556801 is 10865546.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64384576 + 172225 = 8024^2 + 415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64556801 is a prime.

It is not a weakly prime, because it can be changed into another prime (64556861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32278400 + 32278401.

It is an arithmetic number, because the mean of its divisors is an integer number (32278401).

Almost surely, 2^64556801 is an apocalyptic number.

It is an amenable number.

64556801 is a deficient number, since it is larger than the sum of its proper divisors (1).

64556801 is an equidigital number, since it uses as much as digits as its factorization.

64556801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 64556801 is about 8034.7246997019. The cubic root of 64556801 is about 401.1566542370.

The spelling of 64556801 in words is "sixty-four million, five hundred fifty-six thousand, eight hundred one".