689127901 has 16 divisors (see below), whose sum is σ = 866786688. Its totient is φ = 532224000.

The previous prime is 689127869. The next prime is 689127913. The reversal of 689127901 is 109721986.

It is not a de Polignac number, because 689127901 - 2⁵ = 689127869 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 (689127941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30900 + ... + 48301.

It is an arithmetic number, because the mean of its divisors is an integer number (54174168).

Almost surely, 2^689127901 is an apocalyptic number.

It is an amenable number.

689127901 is a deficient number, since it is larger than the sum of its proper divisors (177658787).

689127901 is a wasteful number, since it uses less digits than its factorization.

689127901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79332.

The product of its (nonzero) digits is 54432, while the sum is 43.

The square root of 689127901 is about 26251.2457037757. The cubic root of 689127901 is about 883.2831477679.

The spelling of 689127901 in words is "six hundred eighty-nine million, one hundred twenty-seven thousand, nine hundred one".