64813701 has 16 divisors (see below), whose sum is σ = 90468864. Its totient is φ = 41196144.

The previous prime is 64813663. The next prime is 64813711. The reversal of 64813701 is 10731846.

It is a happy number.

It is not a de Polignac number, because 64813701 - 2¹³ = 64805509 is a prime.

It is a super-3 number, since 3×64813701³ (a number of 24 digits) contains 333 as substring.

It is a Curzon number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64813711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22590 + ... + 25296.

It is an arithmetic number, because the mean of its divisors is an integer number (5654304).

Almost surely, 2^64813701 is an apocalyptic number.

It is an amenable number.

64813701 is a deficient number, since it is larger than the sum of its proper divisors (25655163).

64813701 is a wasteful number, since it uses less digits than its factorization.

64813701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3080.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 64813701 is about 8050.6956842251. The cubic root of 64813701 is about 401.6880763904.

The spelling of 64813701 in words is "sixty-four million, eight hundred thirteen thousand, seven hundred one".