120653866 has 4 divisors (see below), whose sum is σ = 180980802. Its totient is φ = 60326932.

The previous prime is 120653851. The next prime is 120653881. The reversal of 120653866 is 668356021.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (120653851) and next prime (120653881).

It can be written as a sum of positive squares in only one way, i.e., 113742225 + 6911641 = 10665^2 + 2629^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30163465 + ... + 30163468.

Almost surely, 2^120653866 is an apocalyptic number.

120653866 is a deficient number, since it is larger than the sum of its proper divisors (60326936).

120653866 is an equidigital number, since it uses as much as digits as its factorization.

120653866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60326935.

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

The square root of 120653866 is about 10984.2553684808. The cubic root of 120653866 is about 494.1366660619.

It can be divided in two parts, 12065 and 3866, that added together give a triangular number (15931 = T₁₇₈).

The spelling of 120653866 in words is "one hundred twenty million, six hundred fifty-three thousand, eight hundred sixty-six".