505644995 has 16 divisors (see below), whose sum is σ = 639696960. Its totient is φ = 382930944.

The previous prime is 505644989. The next prime is 505645001. The reversal of 505644995 is 599446505.

It is an interprime number because it is at equal distance from previous prime (505644989) and next prime (505645001).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505644995 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11510 + ... + 33819.

It is an arithmetic number, because the mean of its divisors is an integer number (39981060).

Almost surely, 2^505644995 is an apocalyptic number.

505644995 is a deficient number, since it is larger than the sum of its proper divisors (134051965).

505644995 is a wasteful number, since it uses less digits than its factorization.

505644995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45454.

The product of its (nonzero) digits is 972000, while the sum is 47.

The square root of 505644995 is about 22486.5514252408. The cubic root of 505644995 is about 796.6763120587.

The spelling of 505644995 in words is "five hundred five million, six hundred forty-four thousand, nine hundred ninety-five".