74312086 has 4 divisors (see below), whose sum is σ = 111468132. Its totient is φ = 37156042.

The previous prime is 74312071. The next prime is 74312087. The reversal of 74312086 is 68021347.

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

It is a super-2 number, since 2×74312086² = 11044572251342792, 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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74312087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18578020 + ... + 18578023.

It is an arithmetic number, because the mean of its divisors is an integer number (27867033).

Almost surely, 2^74312086 is an apocalyptic number.

74312086 is a deficient number, since it is larger than the sum of its proper divisors (37156046).

74312086 is a wasteful number, since it uses less digits than its factorization.

74312086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37156045.

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

The square root of 74312086 is about 8620.4458121376. The cubic root of 74312086 is about 420.4230167346.

The spelling of 74312086 in words is "seventy-four million, three hundred twelve thousand, eighty-six".