79361646 has 64 divisors (see below), whose sum is σ = 196632576. Its totient is φ = 20793600.

The previous prime is 79361641. The next prime is 79361663. The reversal of 79361646 is 64616397.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 79361598 and 79361607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79361641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 103906 + ... + 104666.

It is an arithmetic number, because the mean of its divisors is an integer number (3072384).

Almost surely, 2^79361646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79361646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98316288).

79361646 is an abundant number, since it is smaller than the sum of its proper divisors (117270930).

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

79361646 is a wasteful number, since it uses less digits than its factorization.

79361646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977.

The product of its digits is 163296, while the sum is 42.

The square root of 79361646 is about 8908.5153645262. The cubic root of 79361646 is about 429.7377994080.

The spelling of 79361646 in words is "seventy-nine million, three hundred sixty-one thousand, six hundred forty-six".