689251053 has 4 divisors (see below), whose sum is σ = 919001408. Its totient is φ = 459500700.

The previous prime is 689251019. The next prime is 689251081. The reversal of 689251053 is 350152986.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 689251053 - 2⁸ = 689250797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689251253) 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, 114875173 + ... + 114875178.

It is an arithmetic number, because the mean of its divisors is an integer number (229750352).

Almost surely, 2^689251053 is an apocalyptic number.

It is an amenable number.

689251053 is a deficient number, since it is larger than the sum of its proper divisors (229750355).

689251053 is a wasteful number, since it uses less digits than its factorization.

689251053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229750354.

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 689251053 is about 26253.5912400570. The cubic root of 689251053 is about 883.3357609363.

The spelling of 689251053 in words is "six hundred eighty-nine million, two hundred fifty-one thousand, fifty-three".