405164345 has 8 divisors (see below), whose sum is σ = 486532680. Its totient is φ = 323907840.

The previous prime is 405164339. The next prime is 405164363. The reversal of 405164345 is 543461504.

It can be written as a sum of positive squares in 4 ways, for example, as 59799289 + 345365056 = 7733^2 + 18584^2 .

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

It is not a de Polignac number, because 405164345 - 2⁴ = 405164329 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, 19766 + ... + 34655.

It is an arithmetic number, because the mean of its divisors is an integer number (60816585).

Almost surely, 2^405164345 is an apocalyptic number.

It is an amenable number.

405164345 is a deficient number, since it is larger than the sum of its proper divisors (81368335).

405164345 is a wasteful number, since it uses less digits than its factorization.

405164345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55915.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 405164345 is about 20128.6945677061. The cubic root of 405164345 is about 739.9636852157.

The spelling of 405164345 in words is "four hundred five million, one hundred sixty-four thousand, three hundred forty-five".