74900145 has 8 divisors (see below), whose sum is σ = 119840256. Its totient is φ = 39946736.

The previous prime is 74900143. The next prime is 74900159. The reversal of 74900145 is 54100947.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 74900145 - 2¹ = 74900143 is a prime.

It is a super-2 number, since 2×74900145² = 11220063442042050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (74900141) 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, 2496657 + ... + 2496686.

It is an arithmetic number, because the mean of its divisors is an integer number (14980032).

Almost surely, 2^74900145 is an apocalyptic number.

It is an amenable number.

74900145 is a deficient number, since it is larger than the sum of its proper divisors (44940111).

74900145 is a wasteful number, since it uses less digits than its factorization.

74900145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4993351.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 74900145 is about 8654.4869865290. The cubic root of 74900145 is about 421.5290918204.

The spelling of 74900145 in words is "seventy-four million, nine hundred thousand, one hundred forty-five".