74780770 has 16 divisors (see below), whose sum is σ = 141690240. Its totient is φ = 28337904.

The previous prime is 74780767. The next prime is 74780779. The reversal of 74780770 is 7708747.

It is not an unprimeable number, because it can be changed into a prime (74780779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196602 + ... + 196981.

It is an arithmetic number, because the mean of its divisors is an integer number (8855640).

Almost surely, 2^74780770 is an apocalyptic number.

74780770 is a deficient number, since it is larger than the sum of its proper divisors (66909470).

74780770 is a wasteful number, since it uses less digits than its factorization.

74780770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393609.

The product of its (nonzero) digits is 76832, while the sum is 40.

The square root of 74780770 is about 8647.5875248534. The cubic root of 74780770 is about 421.3050299835.

The spelling of 74780770 in words is "seventy-four million, seven hundred eighty thousand, seven hundred seventy".