64462081 has 6 divisors (see below), whose sum is σ = 64782870. Its totient is φ = 64142496.

The previous prime is 64462067. The next prime is 64462109. The reversal of 64462081 is 18026446.

It can be written as a sum of positive squares in 3 ways, for example, as 33825856 + 30636225 = 5816^2 + 5535^2 .

It is not a de Polignac number, because 64462081 - 2²³ = 56073473 is a prime.

It is a super-2 number, since 2×64462081² = 8310719773701122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64462001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 157405 + ... + 157813.

It is an arithmetic number, because the mean of its divisors is an integer number (10797145).

Almost surely, 2^64462081 is an apocalyptic number.

It is an amenable number.

64462081 is a deficient number, since it is larger than the sum of its proper divisors (320789).

64462081 is an frugal number, since it uses more digits than its factorization.

64462081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203 (or 806 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 64462081 is about 8028.8281212142. The cubic root of 64462081 is about 400.9603611708.

The spelling of 64462081 in words is "sixty-four million, four hundred sixty-two thousand, eighty-one".