505690454 has 8 divisors (see below), whose sum is σ = 762507648. Its totient is φ = 251521240.

The previous prime is 505690447. The next prime is 505690457. The reversal of 505690454 is 454096505.

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

It is a super-2 number, since 2×505690454² = 511445670533452232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505690457) 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, 661517 + ... + 662280.

It is an arithmetic number, because the mean of its divisors is an integer number (95313456).

Almost surely, 2^505690454 is an apocalyptic number.

505690454 is a deficient number, since it is larger than the sum of its proper divisors (256817194).

505690454 is a wasteful number, since it uses less digits than its factorization.

505690454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323990.

The product of its (nonzero) digits is 108000, while the sum is 38.

The square root of 505690454 is about 22487.5622066955. The cubic root of 505690454 is about 796.7001858724.

The spelling of 505690454 in words is "five hundred five million, six hundred ninety thousand, four hundred fifty-four".