653969254 has 4 divisors (see below), whose sum is σ = 980953884. Its totient is φ = 326984626.

The previous prime is 653969249. The next prime is 653969291. The reversal of 653969254 is 452969356.

It is a happy number.

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

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 653969198 and 653969207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163492312 + ... + 163492315.

It is an arithmetic number, because the mean of its divisors is an integer number (245238471).

Almost surely, 2^653969254 is an apocalyptic number.

653969254 is a deficient number, since it is larger than the sum of its proper divisors (326984630).

653969254 is a wasteful number, since it uses less digits than its factorization.

653969254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326984629.

The product of its digits is 1749600, while the sum is 49.

The square root of 653969254 is about 25572.8225661541. The cubic root of 653969254 is about 867.9987709426.

The spelling of 653969254 in words is "six hundred fifty-three million, nine hundred sixty-nine thousand, two hundred fifty-four".