64127974 has 4 divisors (see below), whose sum is σ = 96191964. Its totient is φ = 32063986.

The previous prime is 64127969. The next prime is 64128017. The reversal of 64127974 is 47972146.

64127974 = T₆₅₃₇ + T₆₅₃₈ + T₆₅₃₉.

64127974 is nontrivially palindromic in base 14.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47972146 = 2 ⋅23986073.

It is a super-2 number, since 2×64127974² = 8224794098689352, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16031992 + ... + 16031995.

It is an arithmetic number, because the mean of its divisors is an integer number (24047991).

Almost surely, 2^64127974 is an apocalyptic number.

64127974 is the 6539-th centered triangular number.

64127974 is a deficient number, since it is larger than the sum of its proper divisors (32063990).

64127974 is a wasteful number, since it uses less digits than its factorization.

64127974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32063989.

The product of its digits is 84672, while the sum is 40.

The square root of 64127974 is about 8007.9943806174. The cubic root of 64127974 is about 400.2664349916.

The spelling of 64127974 in words is "sixty-four million, one hundred twenty-seven thousand, nine hundred seventy-four".