45631986 has 8 divisors (see below), whose sum is σ = 91263984. Its totient is φ = 15210660.

The previous prime is 45631981. The next prime is 45631997. The reversal of 45631986 is 68913654.

45631986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

45631986 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (45631981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3802660 + ... + 3802671.

It is an arithmetic number, because the mean of its divisors is an integer number (11407998).

Almost surely, 2^45631986 is an apocalyptic number.

45631986 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.

45631986 is a wasteful number, since it uses less digits than its factorization.

45631986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7605336.

The product of its digits is 155520, while the sum is 42.

The square root of 45631986 is about 6755.1451501800. The cubic root of 45631986 is about 357.3467117943.

The spelling of 45631986 in words is "forty-five million, six hundred thirty-one thousand, nine hundred eighty-six".