64954861 has 4 divisors (see below), whose sum is σ = 64971072. Its totient is φ = 64938652.

The previous prime is 64954849. The next prime is 64954907. The reversal of 64954861 is 16845946.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 64954861 - 2⁹ = 64954349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64954801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2766 + ... + 11728.

It is an arithmetic number, because the mean of its divisors is an integer number (16242768).

Almost surely, 2^64954861 is an apocalyptic number.

It is an amenable number.

64954861 is a deficient number, since it is larger than the sum of its proper divisors (16211).

64954861 is an equidigital number, since it uses as much as digits as its factorization.

64954861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16210.

The product of its digits is 207360, while the sum is 43.

The square root of 64954861 is about 8059.4578601789. The cubic root of 64954861 is about 401.9794817213.

The spelling of 64954861 in words is "sixty-four million, nine hundred fifty-four thousand, eight hundred sixty-one".