74801906 has 16 divisors (see below), whose sum is σ = 113267160. Its totient is φ = 37048320.

The previous prime is 74801899. The next prime is 74801929. The reversal of 74801906 is 60910847.

It can be written as a sum of positive squares in 4 ways, for example, as 64657681 + 10144225 = 8041^2 + 3185^2 .

It is a super-4 number, since 4×74801906⁴ (a number of 33 digits) contains 4444 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137996 + ... + 138536.

Almost surely, 2^74801906 is an apocalyptic number.

74801906 is a deficient number, since it is larger than the sum of its proper divisors (38465254).

74801906 is a wasteful number, since it uses less digits than its factorization.

74801906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 74801906 is about 8648.8095134533. The cubic root of 74801906 is about 421.3447187266.

The spelling of 74801906 in words is "seventy-four million, eight hundred one thousand, nine hundred six".