503407697 has 4 divisors (see below), whose sum is σ = 542131380. Its totient is φ = 464684016.

The previous prime is 503407673. The next prime is 503407759. The reversal of 503407697 is 796704305.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 796704305 = 5 ⋅159340861.

It can be written as a sum of positive squares in 2 ways, for example, as 267355201 + 236052496 = 16351^2 + 15364^2 .

It is a cyclic number.

It is not a de Polignac number, because 503407697 - 2⁶ = 503407633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (503407627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19361822 + ... + 19361847.

It is an arithmetic number, because the mean of its divisors is an integer number (135532845).

Almost surely, 2^503407697 is an apocalyptic number.

It is an amenable number.

503407697 is a deficient number, since it is larger than the sum of its proper divisors (38723683).

503407697 is a wasteful number, since it uses less digits than its factorization.

503407697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38723682.

The product of its (nonzero) digits is 158760, while the sum is 41.

The square root of 503407697 is about 22436.7488063668. The cubic root of 503407697 is about 795.4995723507.

The spelling of 503407697 in words is "five hundred three million, four hundred seven thousand, six hundred ninety-seven".