103991646 has 16 divisors (see below), whose sum is σ = 226891008. Its totient is φ = 31512600.

The previous prime is 103991627. The next prime is 103991659. The reversal of 103991646 is 646199301.

It is a congruent 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, 787750 + ... + 787881.

It is an arithmetic number, because the mean of its divisors is an integer number (14180688).

Almost surely, 2^103991646 is an apocalyptic number.

103991646 is an abundant number, since it is smaller than the sum of its proper divisors (122899362).

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

103991646 is a wasteful number, since it uses less digits than its factorization.

103991646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575647.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 103991646 is about 10197.6294304118. The cubic root of 103991646 is about 470.2543455083.

The spelling of 103991646 in words is "one hundred three million, nine hundred ninety-one thousand, six hundred forty-six".