74248631 has 4 divisors (see below), whose sum is σ = 74462952. Its totient is φ = 74034312.

The previous prime is 74248589. The next prime is 74248661. The reversal of 74248631 is 13684247.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13684247 = 1181 ⋅11587.

It is a cyclic number.

It is not a de Polignac number, because 74248631 - 2⁶ = 74248567 is a prime.

It is a super-2 number, since 2×74248631² = 11025718410748322, 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 = 74248591 and 74248600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74248661) 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, 106640 + ... + 107333.

It is an arithmetic number, because the mean of its divisors is an integer number (18615738).

Almost surely, 2^74248631 is an apocalyptic number.

74248631 is a deficient number, since it is larger than the sum of its proper divisors (214321).

74248631 is a wasteful number, since it uses less digits than its factorization.

74248631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214320.

The product of its digits is 32256, while the sum is 35.

The square root of 74248631 is about 8616.7645320039. The cubic root of 74248631 is about 420.3033164229.

The spelling of 74248631 in words is "seventy-four million, two hundred forty-eight thousand, six hundred thirty-one".