74649590 has 8 divisors (see below), whose sum is σ = 134369280. Its totient is φ = 29859832.

The previous prime is 74649587. The next prime is 74649593. The reversal of 74649590 is 9594647.

It is an interprime number because it is at equal distance from previous prime (74649587) and next prime (74649593).

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

It is a super-2 number, since 2×74649590² = 11145122574336200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74649593) 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, 3732470 + ... + 3732489.

It is an arithmetic number, because the mean of its divisors is an integer number (16796160).

Almost surely, 2^74649590 is an apocalyptic number.

74649590 is a deficient number, since it is larger than the sum of its proper divisors (59719690).

74649590 is a wasteful number, since it uses less digits than its factorization.

74649590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7464966.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 74649590 is about 8639.9994212963. Note that the first 3 decimals coincide. The cubic root of 74649590 is about 421.0585355011.

The spelling of 74649590 in words is "seventy-four million, six hundred forty-nine thousand, five hundred ninety".