74067720 has 32 divisors (see below), whose sum is σ = 222203520. Its totient is φ = 19751360.

The previous prime is 74067713. The next prime is 74067727. The reversal of 74067720 is 2776047.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (74067713) and next prime (74067727).

It is not an unprimeable number, because it can be changed into a prime (74067727) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 308496 + ... + 308735.

It is an arithmetic number, because the mean of its divisors is an integer number (6943860).

Almost surely, 2^74067720 is an apocalyptic number.

It is an amenable number.

74067720 is an abundant number, since it is smaller than the sum of its proper divisors (148135800).

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

74067720 is a wasteful number, since it uses less digits than its factorization.

74067720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617245 (or 617241 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 33.

The square root of 74067720 is about 8606.2605119762. The cubic root of 74067720 is about 419.9616745074.

The spelling of 74067720 in words is "seventy-four million, sixty-seven thousand, seven hundred twenty".