64799081 has 8 divisors (see below), whose sum is σ = 65495424. Its totient is φ = 64106640.

The previous prime is 64799069. The next prime is 64799113. The reversal of 64799081 is 18099746.

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 64799081 - 2⁶ = 64799017 is a prime.

It is a super-2 number, since 2×64799081² = 8397841796889122, 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 (64799881) 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, 41786 + ... + 43308.

It is an arithmetic number, because the mean of its divisors is an integer number (8186928).

Almost surely, 2^64799081 is an apocalyptic number.

It is an amenable number.

64799081 is a deficient number, since it is larger than the sum of its proper divisors (696343).

64799081 is a wasteful number, since it uses less digits than its factorization.

64799081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1951.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 64799081 is about 8049.7876369504. The cubic root of 64799081 is about 401.6578712475.

The spelling of 64799081 in words is "sixty-four million, seven hundred ninety-nine thousand, eighty-one".