405245066 has 8 divisors (see below), whose sum is σ = 622693764. Its totient is φ = 197680480.

The previous prime is 405245047. The next prime is 405245083. The reversal of 405245066 is 660542504.

It can be written as a sum of positive squares in 2 ways, for example, as 405015625 + 229441 = 20125^2 + 479^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2470925 + ... + 2471088.

Almost surely, 2^405245066 is an apocalyptic number.

405245066 is a deficient number, since it is larger than the sum of its proper divisors (217448698).

405245066 is a wasteful number, since it uses less digits than its factorization.

405245066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4942056.

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

The square root of 405245066 is about 20130.6995904266. The cubic root of 405245066 is about 740.0128230064.

The spelling of 405245066 in words is "four hundred five million, two hundred forty-five thousand, sixty-six".