74980987 has 4 divisors (see below), whose sum is σ = 75823560. Its totient is φ = 74138416.

The previous prime is 74980967. The next prime is 74981003. The reversal of 74980987 is 78908947.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 74980987 - 2¹⁵ = 74948219 is a prime.

It is a super-2 number, since 2×74980987² = 11244296822988338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74980937) 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, 421153 + ... + 421330.

It is an arithmetic number, because the mean of its divisors is an integer number (18955890).

Almost surely, 2^74980987 is an apocalyptic number.

74980987 is a deficient number, since it is larger than the sum of its proper divisors (842573).

74980987 is an equidigital number, since it uses as much as digits as its factorization.

74980987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842572.

The product of its (nonzero) digits is 1016064, while the sum is 52.

The square root of 74980987 is about 8659.1562521992. The cubic root of 74980987 is about 421.6806936719.

The spelling of 74980987 in words is "seventy-four million, nine hundred eighty thousand, nine hundred eighty-seven".