689750747 has 4 divisors (see below), whose sum is σ = 788286576. Its totient is φ = 591214920.

The previous prime is 689750731. The next prime is 689750759. The reversal of 689750747 is 747057986.

689750747 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 689750747 - 2⁴ = 689750731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (689750777) 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, 49267904 + ... + 49267917.

It is an arithmetic number, because the mean of its divisors is an integer number (197071644).

Almost surely, 2^689750747 is an apocalyptic number.

689750747 is a deficient number, since it is larger than the sum of its proper divisors (98535829).

689750747 is an equidigital number, since it uses as much as digits as its factorization.

689750747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98535828.

The product of its (nonzero) digits is 2963520, while the sum is 53.

The square root of 689750747 is about 26263.1061948125. The cubic root of 689750747 is about 883.5491766201.

The spelling of 689750747 in words is "six hundred eighty-nine million, seven hundred fifty thousand, seven hundred forty-seven".