64137671 has 8 divisors (see below), whose sum is σ = 69706560. Its totient is φ = 58659552.

The previous prime is 64137643. The next prime is 64137683. The reversal of 64137671 is 17673146.

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 64137671 - 2¹⁴ = 64121287 is a prime.

It is a super-2 number, since 2×64137671² = 8227281682608482, 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 (64137371) 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, 21215 + ... + 24048.

It is an arithmetic number, because the mean of its divisors is an integer number (8713320).

Almost surely, 2^64137671 is an apocalyptic number.

64137671 is a deficient number, since it is larger than the sum of its proper divisors (5568889).

64137671 is a wasteful number, since it uses less digits than its factorization.

64137671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45385.

The product of its digits is 21168, while the sum is 35.

The square root of 64137671 is about 8008.5998151987. The cubic root of 64137671 is about 400.2866091722.

The spelling of 64137671 in words is "sixty-four million, one hundred thirty-seven thousand, six hundred seventy-one".