64454761 has 4 divisors (see below), whose sum is σ = 73662592. Its totient is φ = 55246932.

The previous prime is 64454749. The next prime is 64454833. The reversal of 64454761 is 16745446.

64454761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 an emirpimes, since its reverse is a distinct semiprime: 16745446 = 2 ⋅8372723.

It is a cyclic number.

It is not a de Polignac number, because 64454761 - 2¹⁹ = 63930473 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64454761.

It is not an unprimeable number, because it can be changed into a prime (64454711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4603905 + ... + 4603918.

It is an arithmetic number, because the mean of its divisors is an integer number (18415648).

Almost surely, 2^64454761 is an apocalyptic number.

It is an amenable number.

64454761 is a deficient number, since it is larger than the sum of its proper divisors (9207831).

64454761 is an equidigital number, since it uses as much as digits as its factorization.

64454761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9207830.

The product of its digits is 80640, while the sum is 37.

The square root of 64454761 is about 8028.3722509610. The cubic root of 64454761 is about 400.9451835609.

The spelling of 64454761 in words is "sixty-four million, four hundred fifty-four thousand, seven hundred sixty-one".