120640693 has 4 divisors (see below), whose sum is σ = 121521420. Its totient is φ = 119759968.

The previous prime is 120640691. The next prime is 120640697. The reversal of 120640693 is 396046021.

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

It can be written as a sum of positive squares in 2 ways, for example, as 91068849 + 29571844 = 9543^2 + 5438^2 .

It is a cyclic number.

It is not a de Polignac number, because 120640693 - 2¹ = 120640691 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120640691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 440158 + ... + 440431.

It is an arithmetic number, because the mean of its divisors is an integer number (30380355).

Almost surely, 2^120640693 is an apocalyptic number.

It is an amenable number.

120640693 is a deficient number, since it is larger than the sum of its proper divisors (880727).

120640693 is an equidigital number, since it uses as much as digits as its factorization.

120640693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880726.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 120640693 is about 10983.6557211158. The cubic root of 120640693 is about 494.1186821121.

The spelling of 120640693 in words is "one hundred twenty million, six hundred forty thousand, six hundred ninety-three".