11647990 has 8 divisors (see below), whose sum is σ = 20966400. Its totient is φ = 4659192.

The previous prime is 11647973. The next prime is 11647991. The reversal of 11647990 is 9974611.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11647991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 582390 + ... + 582409.

It is an arithmetic number, because the mean of its divisors is an integer number (2620800).

Almost surely, 2^11647990 is an apocalyptic number.

11647990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11647990 is a deficient number, since it is larger than the sum of its proper divisors (9318410).

11647990 is a wasteful number, since it uses less digits than its factorization.

11647990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1164806.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 11647990 is about 3412.9151762093. The cubic root of 11647990 is about 226.6819794538.

The spelling of 11647990 in words is "eleven million, six hundred forty-seven thousand, nine hundred ninety".