74487771 has 48 divisors (see below), whose sum is σ = 118836640. Its totient is φ = 44789760.

The previous prime is 74487713. The next prime is 74487773. The reversal of 74487771 is 17778447.

It is a happy number.

It is not a de Polignac number, because 74487771 - 2¹³ = 74479579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74487773) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 385851 + ... + 386043.

Almost surely, 2^74487771 is an apocalyptic number.

74487771 is a deficient number, since it is larger than the sum of its proper divisors (44348869).

74487771 is a wasteful number, since it uses less digits than its factorization.

74487771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316 (or 313 counting only the distinct ones).

The product of its digits is 307328, while the sum is 45.

The square root of 74487771 is about 8630.6298147934. The cubic root of 74487771 is about 420.7540704972.

The spelling of 74487771 in words is "seventy-four million, four hundred eighty-seven thousand, seven hundred seventy-one".