64120671 has 6 divisors (see below), whose sum is σ = 92618760. Its totient is φ = 42747108.

The previous prime is 64120627. The next prime is 64120691. The reversal of 64120671 is 17602146.

It is not a de Polignac number, because 64120671 - 2¹⁷ = 63989599 is a prime.

It is a super-2 number, since 2×64120671² = 8222920898980482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64120601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3562251 + ... + 3562268.

It is an arithmetic number, because the mean of its divisors is an integer number (15436460).

Almost surely, 2^64120671 is an apocalyptic number.

64120671 is a deficient number, since it is larger than the sum of its proper divisors (28498089).

64120671 is a wasteful number, since it uses less digits than its factorization.

64120671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7124525 (or 7124522 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 64120671 is about 8007.5383857962. The cubic root of 64120671 is about 400.2512400797.

It can be divided in two parts, 641 and 20671, that added together give a palindrome (21312).

The spelling of 64120671 in words is "sixty-four million, one hundred twenty thousand, six hundred seventy-one".