74724887 has 2 divisors, whose sum is σ = 74724888. Its totient is φ = 74724886.

The previous prime is 74724833. The next prime is 74724893. The reversal of 74724887 is 78842747.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74724887 - 2¹⁴ = 74708503 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74724827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37362443 + 37362444.

It is an arithmetic number, because the mean of its divisors is an integer number (37362444).

Almost surely, 2^74724887 is an apocalyptic number.

74724887 is a deficient number, since it is larger than the sum of its proper divisors (1).

74724887 is an equidigital number, since it uses as much as digits as its factorization.

74724887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 702464, while the sum is 47.

The square root of 74724887 is about 8644.3557886056. The cubic root of 74724887 is about 421.2000580052.

The spelling of 74724887 in words is "seventy-four million, seven hundred twenty-four thousand, eight hundred eighty-seven".