74775407 has 4 divisors (see below), whose sum is σ = 85457616. Its totient is φ = 64093200.

The previous prime is 74775403. The next prime is 74775473. The reversal of 74775407 is 70457747.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 74775407 - 2² = 74775403 is a prime.

It is a super-2 number, since 2×74775407² = 11182722984031298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74775403) 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, 5341094 + ... + 5341107.

It is an arithmetic number, because the mean of its divisors is an integer number (21364404).

Almost surely, 2^74775407 is an apocalyptic number.

74775407 is a deficient number, since it is larger than the sum of its proper divisors (10682209).

74775407 is a wasteful number, since it uses less digits than its factorization.

74775407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10682208.

The product of its (nonzero) digits is 192080, while the sum is 41.

The square root of 74775407 is about 8647.2774328109. The cubic root of 74775407 is about 421.2949582637.

The spelling of 74775407 in words is "seventy-four million, seven hundred seventy-five thousand, four hundred seven".