1166250664 has 8 divisors (see below), whose sum is σ = 2186720010. Its totient is φ = 583125328.

The previous prime is 1166250661. The next prime is 1166250697. The reversal of 1166250664 is 4660526611.

It can be written as a sum of positive squares in only one way, i.e., 1091773764 + 74476900 = 33042^2 + 8630^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1166250664² = 2720281222560881792, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1166250661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72890659 + ... + 72890674.

Almost surely, 2^1166250664 is an apocalyptic number.

It is an amenable number.

1166250664 is a deficient number, since it is larger than the sum of its proper divisors (1020469346).

1166250664 is a wasteful number, since it uses less digits than its factorization.

1166250664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145781339 (or 145781335 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 1166250664 is about 34150.4123547579. The cubic root of 1166250664 is about 1052.6014598565.

It can be divided in two parts, 11662 and 50664, that added together give a palindrome (62326).

The spelling of 1166250664 in words is "one billion, one hundred sixty-six million, two hundred fifty thousand, six hundred sixty-four".