386720693 has 2 divisors, whose sum is σ = 386720694. Its totient is φ = 386720692.

The previous prime is 386720681. The next prime is 386720749. The reversal of 386720693 is 396027683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 385022884 + 1697809 = 19622^2 + 1303^2 .

It is a cyclic number.

It is not a de Polignac number, because 386720693 - 2¹² = 386716597 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (386720093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193360346 + 193360347.

It is an arithmetic number, because the mean of its divisors is an integer number (193360347).

Almost surely, 2^386720693 is an apocalyptic number.

It is an amenable number.

386720693 is a deficient number, since it is larger than the sum of its proper divisors (1).

386720693 is an equidigital number, since it uses as much as digits as its factorization.

386720693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 44.

The square root of 386720693 is about 19665.2153052032. The cubic root of 386720693 is about 728.5608055773.

The spelling of 386720693 in words is "three hundred eighty-six million, seven hundred twenty thousand, six hundred ninety-three".