74821473 has 12 divisors (see below), whose sum is σ = 108294420. Its totient is φ = 49779936.

The previous prime is 74821469. The next prime is 74821489. The reversal of 74821473 is 37412847.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 31102929 + 43718544 = 5577^2 + 6612^2 .

It is not a de Polignac number, because 74821473 - 2² = 74821469 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (74821493) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3586 + ... + 12747.

It is an arithmetic number, because the mean of its divisors is an integer number (9024535).

Almost surely, 2^74821473 is an apocalyptic number.

It is an amenable number.

74821473 is a deficient number, since it is larger than the sum of its proper divisors (33472947).

74821473 is a wasteful number, since it uses less digits than its factorization.

74821473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16848 (or 16845 counting only the distinct ones).

The product of its digits is 37632, while the sum is 36.

The square root of 74821473 is about 8649.9406356344. The cubic root of 74821473 is about 421.3814545702.

The spelling of 74821473 in words is "seventy-four million, eight hundred twenty-one thousand, four hundred seventy-three".