74066831 has 4 divisors (see below), whose sum is σ = 77287152. Its totient is φ = 70846512.

The previous prime is 74066819. The next prime is 74066851. The reversal of 74066831 is 13866047.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13866047 = 13 ⋅1066619.

It is a cyclic number.

It is not a de Polignac number, because 74066831 - 2²⁶ = 6957967 is a prime.

It is a super-2 number, since 2×74066831² = 10971790908765122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74066791 and 74066800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74066851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1610126 + ... + 1610171.

It is an arithmetic number, because the mean of its divisors is an integer number (19321788).

Almost surely, 2^74066831 is an apocalyptic number.

74066831 is a deficient number, since it is larger than the sum of its proper divisors (3220321).

74066831 is a wasteful number, since it uses less digits than its factorization.

74066831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3220320.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 74066831 is about 8606.2088633730. The cubic root of 74066831 is about 419.9599942999.

The spelling of 74066831 in words is "seventy-four million, sixty-six thousand, eight hundred thirty-one".