74779161 has 8 divisors (see below), whose sum is σ = 102921984. Its totient is φ = 48244560.

The previous prime is 74779157. The next prime is 74779163. The reversal of 74779161 is 16197747.

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

It is not a de Polignac number, because 74779161 - 2² = 74779157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74779163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 401946 + ... + 402131.

It is an arithmetic number, because the mean of its divisors is an integer number (12865248).

Almost surely, 2^74779161 is an apocalyptic number.

It is an amenable number.

74779161 is a deficient number, since it is larger than the sum of its proper divisors (28142823).

74779161 is a wasteful number, since it uses less digits than its factorization.

74779161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804111.

The product of its digits is 74088, while the sum is 42.

The square root of 74779161 is about 8647.4944926262. The cubic root of 74779161 is about 421.3020083304.

The spelling of 74779161 in words is "seventy-four million, seven hundred seventy-nine thousand, one hundred sixty-one".