396785714645 has 4 divisors (see below), whose sum is σ = 476142857580. Its totient is φ = 317428571712.

The previous prime is 396785714641. The next prime is 396785714659. The reversal of 396785714645 is 546417587693.

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 84375144676 + 312410569969 = 290474^2 + 558937^2 .

It is a cyclic number.

It is not a de Polignac number, because 396785714645 - 2² = 396785714641 is a prime.

It is a super-3 number, since 3×396785714645³ (a number of 36 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396785714641) 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, 39678571460 + ... + 39678571469.

It is an arithmetic number, because the mean of its divisors is an integer number (119035714395).

Almost surely, 2^396785714645 is an apocalyptic number.

It is an amenable number.

396785714645 is a deficient number, since it is larger than the sum of its proper divisors (79357142935).

396785714645 is an equidigital number, since it uses as much as digits as its factorization.

396785714645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79357142934.

The product of its digits is 152409600, while the sum is 65.

The spelling of 396785714645 in words is "three hundred ninety-six billion, seven hundred eighty-five million, seven hundred fourteen thousand, six hundred forty-five".