64461457 has 8 divisors (see below), whose sum is σ = 64967840. Its totient is φ = 63957600.

The previous prime is 64461451. The next prime is 64461469. The reversal of 64461457 is 75416446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64461457 - 2⁷ = 64461329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64461451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106957 + ... + 107557.

It is an arithmetic number, because the mean of its divisors is an integer number (8120980).

Almost surely, 2^64461457 is an apocalyptic number.

It is an amenable number.

64461457 is a deficient number, since it is larger than the sum of its proper divisors (506383).

64461457 is a wasteful number, since it uses less digits than its factorization.

64461457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263.

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

The square root of 64461457 is about 8028.7892611526. The cubic root of 64461457 is about 400.9590673865.

The spelling of 64461457 in words is "sixty-four million, four hundred sixty-one thousand, four hundred fifty-seven".