74939646 has 8 divisors (see below), whose sum is σ = 149879304. Its totient is φ = 24979880.

The previous prime is 74939597. The next prime is 74939647. The reversal of 74939646 is 64693947.

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

74939646 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 74939595 and 74939604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74939647) 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, 6244965 + ... + 6244976.

It is an arithmetic number, because the mean of its divisors is an integer number (18734913).

Almost surely, 2^74939646 is an apocalyptic number.

74939646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74939646 is a wasteful number, since it uses less digits than its factorization.

74939646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12489946.

The product of its digits is 979776, while the sum is 48.

The square root of 74939646 is about 8656.7687967278. The cubic root of 74939646 is about 421.6031811046.

The spelling of 74939646 in words is "seventy-four million, nine hundred thirty-nine thousand, six hundred forty-six".