74701620 has 144 divisors (see below), whose sum is σ = 261975168. Its totient is φ = 16876800.

The previous prime is 74701619. The next prime is 74701633. The reversal of 74701620 is 2610747.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 126967 + ... + 127553.

It is an arithmetic number, because the mean of its divisors is an integer number (1819272).

Almost surely, 2^74701620 is an apocalyptic number.

74701620 is a gapful number since it is divisible by the number (70) 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 74701620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130987584).

74701620 is an abundant number, since it is smaller than the sum of its proper divisors (187273548).

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

74701620 is a wasteful number, since it uses less digits than its factorization.

74701620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710 (or 705 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 74701620 is about 8643.0098923928. The cubic root of 74701620 is about 421.1563372785.

The spelling of 74701620 in words is "seventy-four million, seven hundred one thousand, six hundred twenty".