74771712 has 216 divisors, whose sum is σ = 241061184. Its totient is φ = 22167552.

The previous prime is 74771693. The next prime is 74771731. The reversal of 74771712 is 21717747.

It is an interprime number because it is at equal distance from previous prime (74771693) and next prime (74771731).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 900823 + ... + 900905.

It is an arithmetic number, because the mean of its divisors is an integer number (1116024).

Almost surely, 2^74771712 is an apocalyptic number.

74771712 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74771712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120530592).

74771712 is an abundant number, since it is smaller than the sum of its proper divisors (166289472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74771712 is a wasteful number, since it uses less digits than its factorization.

74771712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145 (or 128 counting only the distinct ones).

The product of its digits is 19208, while the sum is 36.

The square root of 74771712 is about 8647.0637791102. The cubic root of 74771712 is about 421.2880187695.

The spelling of 74771712 in words is "seventy-four million, seven hundred seventy-one thousand, seven hundred twelve".