64674142 has 8 divisors (see below), whose sum is σ = 104473656. Its totient is φ = 29849592.

The previous prime is 64674133. The next prime is 64674143. The reversal of 64674142 is 24147646.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 64674098 and 64674107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64674143) 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 3 ways as a sum of consecutive naturals, for example, 1243708 + ... + 1243759.

It is an arithmetic number, because the mean of its divisors is an integer number (13059207).

Almost surely, 2^64674142 is an apocalyptic number.

64674142 is a deficient number, since it is larger than the sum of its proper divisors (39799514).

64674142 is a wasteful number, since it uses less digits than its factorization.

64674142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2487482.

The product of its digits is 32256, while the sum is 34.

The square root of 64674142 is about 8042.0235015822. The cubic root of 64674142 is about 401.3995598692.

It can be divided in two parts, 6467 and 4142, that added together give a square (10609 = 103²).

The spelling of 64674142 in words is "sixty-four million, six hundred seventy-four thousand, one hundred forty-two".