74820471 has 24 divisors (see below), whose sum is σ = 111751920. Its totient is φ = 44478720.

The previous prime is 74820419. The next prime is 74820481. The reversal of 74820471 is 17402847.

It is not a de Polignac number, because 74820471 - 2⁶ = 74820407 is a prime.

It is a super-3 number, since 3×74820471³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74820481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17295 + ... + 21183.

It is an arithmetic number, because the mean of its divisors is an integer number (4656330).

Almost surely, 2^74820471 is an apocalyptic number.

74820471 is a deficient number, since it is larger than the sum of its proper divisors (36931449).

74820471 is a wasteful number, since it uses less digits than its factorization.

74820471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3967 (or 3956 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 74820471 is about 8649.8827159679. The cubic root of 74820471 is about 421.3795735322.

The spelling of 74820471 in words is "seventy-four million, eight hundred twenty thousand, four hundred seventy-one".