396673245 has 18 divisors (see below), whose sum is σ = 687798618. Its totient is φ = 211487808.

The previous prime is 396673243. The next prime is 396673247. The reversal of 396673245 is 542376693.

It is an interprime number because it is at equal distance from previous prime (396673243) and next prime (396673247).

It can be written as a sum of positive squares in 3 ways, for example, as 56160036 + 340513209 = 7494^2 + 18453^2 .

It is not a de Polignac number, because 396673245 - 2¹ = 396673243 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 396673245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396673243) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 132121 + ... + 135089.

Almost surely, 2^396673245 is an apocalyptic number.

It is an amenable number.

396673245 is a deficient number, since it is larger than the sum of its proper divisors (291125373).

396673245 is an frugal number, since it uses more digits than its factorization.

396673245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5949 (or 2977 counting only the distinct ones).

The product of its digits is 816480, while the sum is 45.

The square root of 396673245 is about 19916.6574755906. The cubic root of 396673245 is about 734.7579655661.

Multiplying 396673245 by its sum of digits (45), we get a square (17850296025 = 133605²).

396673245 divided by its sum of digits (45) gives a square (8814961 = 2969²).

The spelling of 396673245 in words is "three hundred ninety-six million, six hundred seventy-three thousand, two hundred forty-five".