74145970 has 8 divisors (see below), whose sum is σ = 133462764. Its totient is φ = 29658384.

The previous prime is 74145947. The next prime is 74145977. The reversal of 74145970 is 7954147.

It can be written as a sum of positive squares in 2 ways, for example, as 73462041 + 683929 = 8571^2 + 827^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (74145977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3707289 + ... + 3707308.

Almost surely, 2^74145970 is an apocalyptic number.

74145970 is a deficient number, since it is larger than the sum of its proper divisors (59316794).

74145970 is a wasteful number, since it uses less digits than its factorization.

74145970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7414604.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 74145970 is about 8610.8054210974. The cubic root of 74145970 is about 420.1095141479.

The spelling of 74145970 in words is "seventy-four million, one hundred forty-five thousand, nine hundred seventy".