11620987 has 6 divisors (see below), whose sum is σ = 13518348. Its totient is φ = 9960804.

The previous prime is 11620969. The next prime is 11620991. The reversal of 11620987 is 78902611.

It is a happy number.

It is not a de Polignac number, because 11620987 - 2¹⁵ = 11588219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11620937) 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 5 ways as a sum of consecutive naturals, for example, 118533 + ... + 118630.

It is an arithmetic number, because the mean of its divisors is an integer number (2253058).

Almost surely, 2^11620987 is an apocalyptic number.

11620987 is a deficient number, since it is larger than the sum of its proper divisors (1897361).

11620987 is an equidigital number, since it uses as much as digits as its factorization.

11620987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237177 (or 237170 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 11620987 is about 3408.9568785774. The cubic root of 11620987 is about 226.5066751115.

The spelling of 11620987 in words is "eleven million, six hundred twenty thousand, nine hundred eighty-seven".