1151664 has 20 divisors (see below), whose sum is σ = 2975256. Its totient is φ = 383872.

The previous prime is 1151659. The next prime is 1151671. The reversal of 1151664 is 4661511.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11949 + ... + 12044.

2^1151664 is an apocalyptic number.

It is an amenable number.

1151664 is an abundant number, since it is smaller than the sum of its proper divisors (1823592).

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

1151664 is a wasteful number, since it uses less digits than its factorization.

1151664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24004 (or 23998 counting only the distinct ones).

The product of its digits is 720, while the sum is 24.

The square root of 1151664 is about 1073.1560930265. The cubic root of 1151664 is about 104.8194630052.

The spelling of 1151664 in words is "one million, one hundred fifty-one thousand, six hundred sixty-four".