74587879 has 2 divisors, whose sum is σ = 74587880. Its totient is φ = 74587878.

The previous prime is 74587861. The next prime is 74587889. The reversal of 74587879 is 97878547.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74587879 - 2⁵ = 74587847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74587889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37293939 + 37293940.

It is an arithmetic number, because the mean of its divisors is an integer number (37293940).

Almost surely, 2^74587879 is an apocalyptic number.

74587879 is a deficient number, since it is larger than the sum of its proper divisors (1).

74587879 is an equidigital number, since it uses as much as digits as its factorization.

74587879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3951360, while the sum is 55.

The square root of 74587879 is about 8636.4274442619. The cubic root of 74587879 is about 420.9424772317.

It can be divided in two parts, 74587 and 879, that added together give a triangular number (75466 = T₃₈₈).

The spelling of 74587879 in words is "seventy-four million, five hundred eighty-seven thousand, eight hundred seventy-nine".