505652691 has 4 divisors (see below), whose sum is σ = 674203592. Its totient is φ = 337101792.

The previous prime is 505652689. The next prime is 505652711. The reversal of 505652691 is 196256505.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 505652691 - 2¹ = 505652689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505652611) 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, 84275446 + ... + 84275451.

It is an arithmetic number, because the mean of its divisors is an integer number (168550898).

Almost surely, 2^505652691 is an apocalyptic number.

505652691 is a deficient number, since it is larger than the sum of its proper divisors (168550901).

505652691 is a wasteful number, since it uses less digits than its factorization.

505652691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168550900.

The product of its (nonzero) digits is 81000, while the sum is 39.

The square root of 505652691 is about 22486.7225490955. The cubic root of 505652691 is about 796.6803538864.

The spelling of 505652691 in words is "five hundred five million, six hundred fifty-two thousand, six hundred ninety-one".