74969623 has 2 divisors, whose sum is σ = 74969624. Its totient is φ = 74969622.

The previous prime is 74969621. The next prime is 74969633. The reversal of 74969623 is 32696947.

It is a weak prime.

It is an emirp because it is prime and its reverse (32696947) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74969623 - 2¹ = 74969621 is a prime.

Together with 74969621, it forms a pair of twin primes.

It is the 8659-th Hogben number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74969621) by changing a digit.

It is a nontrivial repunit in base 8658.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37484811 + 37484812.

It is an arithmetic number, because the mean of its divisors is an integer number (37484812).

Almost surely, 2^74969623 is an apocalyptic number.

74969623 is a deficient number, since it is larger than the sum of its proper divisors (1).

74969623 is an equidigital number, since it uses as much as digits as its factorization.

74969623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 46.

The square root of 74969623 is about 8658.5000433100. The cubic root of 74969623 is about 421.6593895089.

The spelling of 74969623 in words is "seventy-four million, nine hundred sixty-nine thousand, six hundred twenty-three".