74631937906 has 8 divisors (see below), whose sum is σ = 112054628700. Its totient is φ = 37280395008.

The previous prime is 74631937903. The next prime is 74631937951. The reversal of 74631937906 is 60973913647.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 74226278025 + 405659881 = 272445^2 + 20141^2 .

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 (74631937903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17784351 + ... + 17788546.

Almost surely, 2^74631937906 is an apocalyptic number.

74631937906 is a deficient number, since it is larger than the sum of its proper divisors (37422690794).

74631937906 is a wasteful number, since it uses less digits than its factorization.

74631937906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35573948.

The product of its (nonzero) digits is 5143824, while the sum is 55.

The spelling of 74631937906 in words is "seventy-four billion, six hundred thirty-one million, nine hundred thirty-seven thousand, nine hundred six".