120690665 has 8 divisors (see below), whose sum is σ = 145012680. Its totient is φ = 96429952.

The previous prime is 120690653. The next prime is 120690677. The reversal of 120690665 is 566096021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (120690653) and next prime (120690677).

It can be written as a sum of positive squares in 4 ways, for example, as 7246864 + 113443801 = 2692^2 + 10651^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 120690665 - 2¹² = 120686569 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10874 + ... + 18963.

It is an arithmetic number, because the mean of its divisors is an integer number (18126585).

Almost surely, 2^120690665 is an apocalyptic number.

It is an amenable number.

120690665 is a deficient number, since it is larger than the sum of its proper divisors (24322015).

120690665 is an equidigital number, since it uses as much as digits as its factorization.

120690665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30651.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 120690665 is about 10985.9303201868. The cubic root of 120690665 is about 494.1868975973.

The spelling of 120690665 in words is "one hundred twenty million, six hundred ninety thousand, six hundred sixty-five".