690754491239 has 4 divisors (see below), whose sum is σ = 692292920400. Its totient is φ = 689216062080.

The previous prime is 690754491209. The next prime is 690754491289. The reversal of 690754491239 is 932194457096.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-690754491239 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 (690754491209) 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, 769213907 + ... + 769214804.

It is an arithmetic number, because the mean of its divisors is an integer number (173073230100).

Almost surely, 2^690754491239 is an apocalyptic number.

690754491239 is a deficient number, since it is larger than the sum of its proper divisors (1538429161).

690754491239 is a wasteful number, since it uses less digits than its factorization.

690754491239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538429160.

The product of its (nonzero) digits is 14696640, while the sum is 59.

The spelling of 690754491239 in words is "six hundred ninety billion, seven hundred fifty-four million, four hundred ninety-one thousand, two hundred thirty-nine".