74155723 has 2 divisors, whose sum is σ = 74155724. Its totient is φ = 74155722.

The previous prime is 74155673. The next prime is 74155729. The reversal of 74155723 is 32755147.

It is a strong prime.

It is an emirp because it is prime and its reverse (32755147) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74155723 - 2¹⁷ = 74024651 is a prime.

It is not a weakly prime, because it can be changed into another prime (74155729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37077861 + 37077862.

It is an arithmetic number, because the mean of its divisors is an integer number (37077862).

Almost surely, 2^74155723 is an apocalyptic number.

74155723 is a deficient number, since it is larger than the sum of its proper divisors (1).

74155723 is an equidigital number, since it uses as much as digits as its factorization.

74155723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29400, while the sum is 34.

The square root of 74155723 is about 8611.3717258054. The cubic root of 74155723 is about 420.1279334383.

The spelling of 74155723 in words is "seventy-four million, one hundred fifty-five thousand, seven hundred twenty-three".