64364719 has 4 divisors (see below), whose sum is σ = 66104344. Its totient is φ = 62625096.

The previous prime is 64364701. The next prime is 64364731. The reversal of 64364719 is 91746346.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91746346 = 2 ⋅45873173.

It is a cyclic number.

It is not a de Polignac number, because 64364719 - 2²¹ = 62267567 is a prime.

It is a super-2 number, since 2×64364719² = 8285634103897922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64364789) 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, 869757 + ... + 869830.

It is an arithmetic number, because the mean of its divisors is an integer number (16526086).

Almost surely, 2^64364719 is an apocalyptic number.

64364719 is a deficient number, since it is larger than the sum of its proper divisors (1739625).

64364719 is a wasteful number, since it uses less digits than its factorization.

64364719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1739624.

The product of its digits is 108864, while the sum is 40.

The square root of 64364719 is about 8022.7625541331. The cubic root of 64364719 is about 400.7583924435.

The spelling of 64364719 in words is "sixty-four million, three hundred sixty-four thousand, seven hundred nineteen".