64460681 has 4 divisors (see below), whose sum is σ = 64477392. Its totient is φ = 64443972.

The previous prime is 64460663. The next prime is 64460689. The reversal of 64460681 is 18606446.

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: 18606446 = 2 ⋅9303223.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64460681 is a prime.

It is a super-2 number, since 2×64460681² = 8310358789967522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64460689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 710 + ... + 11376.

It is an arithmetic number, because the mean of its divisors is an integer number (16119348).

Almost surely, 2^64460681 is an apocalyptic number.

It is an amenable number.

64460681 is a deficient number, since it is larger than the sum of its proper divisors (16711).

64460681 is a wasteful number, since it uses less digits than its factorization.

64460681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16710.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 64460681 is about 8028.7409349163. The cubic root of 64460681 is about 400.9574584381.

The spelling of 64460681 in words is "sixty-four million, four hundred sixty thousand, six hundred eighty-one".