64461057 has 8 divisors (see below), whose sum is σ = 85985184. Its totient is φ = 42955488.

The previous prime is 64461031. The next prime is 64461073. The reversal of 64461057 is 75016446.

64461057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 64461057 - 2¹¹ = 64459009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64461557) 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 7 ways as a sum of consecutive naturals, for example, 11053 + ... + 15845.

It is an arithmetic number, because the mean of its divisors is an integer number (10748148).

Almost surely, 2^64461057 is an apocalyptic number.

It is an amenable number.

64461057 is a deficient number, since it is larger than the sum of its proper divisors (21524127).

64461057 is a wasteful number, since it uses less digits than its factorization.

64461057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9279.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 64461057 is about 8028.7643507578. The cubic root of 64461057 is about 400.9582380333.

It can be divided in two parts, 6446 and 1057, that added together give a triangular number (7503 = T₁₂₂).

The spelling of 64461057 in words is "sixty-four million, four hundred sixty-one thousand, fifty-seven".