64121674 has 4 divisors (see below), whose sum is σ = 96182514. Its totient is φ = 32060836.

The previous prime is 64121653. The next prime is 64121689. The reversal of 64121674 is 47612146.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 54243225 + 9878449 = 7365^2 + 3143^2 .

It is a super-2 number, since 2×64121674² = 8223178153124552, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16030417 + ... + 16030420.

Almost surely, 2^64121674 is an apocalyptic number.

64121674 is a deficient number, since it is larger than the sum of its proper divisors (32060840).

64121674 is a wasteful number, since it uses less digits than its factorization.

64121674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32060839.

The product of its digits is 8064, while the sum is 31.

The square root of 64121674 is about 8007.6010140366. The cubic root of 64121674 is about 400.2533270297.

The spelling of 64121674 in words is "sixty-four million, one hundred twenty-one thousand, six hundred seventy-four".