689023723534 has 16 divisors (see below), whose sum is σ = 1037260551600. Its totient is φ = 343271505024.

The previous prime is 689023723529. The next prime is 689023723543. The reversal of 689023723534 is 435327320986.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 740532 + ... + 1387960.

It is an arithmetic number, because the mean of its divisors is an integer number (64828784475).

Almost surely, 2^689023723534 is an apocalyptic number.

689023723534 is a deficient number, since it is larger than the sum of its proper divisors (348236828066).

689023723534 is a wasteful number, since it uses less digits than its factorization.

689023723534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649347.

The product of its (nonzero) digits is 6531840, while the sum is 52.

The spelling of 689023723534 in words is "six hundred eighty-nine billion, twenty-three million, seven hundred twenty-three thousand, five hundred thirty-four".