74293785 has 24 divisors (see below), whose sum is σ = 129097800. Its totient is φ = 39524352.

The previous prime is 74293777. The next prime is 74293789. The reversal of 74293785 is 58739247.

It can be written as a sum of positive squares in 4 ways, for example, as 19474569 + 54819216 = 4413^2 + 7404^2 .

It is not a de Polignac number, because 74293785 - 2³ = 74293777 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 74293785.

It is not an unprimeable number, because it can be changed into a prime (74293789) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18367 + ... + 22043.

It is an arithmetic number, because the mean of its divisors is an integer number (5379075).

Almost surely, 2^74293785 is an apocalyptic number.

It is an amenable number.

74293785 is a deficient number, since it is larger than the sum of its proper divisors (54804015).

74293785 is a wasteful number, since it uses less digits than its factorization.

74293785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4137 (or 4134 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 74293785 is about 8619.3842587507. The cubic root of 74293785 is about 420.3885010689.

It can be divided in two parts, 74293 and 785, that added together give a triangular number (75078 = T₃₈₇).

The spelling of 74293785 in words is "seventy-four million, two hundred ninety-three thousand, seven hundred eighty-five".