689840801 has 8 divisors (see below), whose sum is σ = 743112384. Its totient is φ = 636598800.

The previous prime is 689840791. The next prime is 689840819. The reversal of 689840801 is 108048986.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 689840801 - 2²² = 685646497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (689840821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75650 + ... + 84276.

It is an arithmetic number, because the mean of its divisors is an integer number (92889048).

Almost surely, 2^689840801 is an apocalyptic number.

It is an amenable number.

689840801 is a deficient number, since it is larger than the sum of its proper divisors (53271583).

689840801 is a wasteful number, since it uses less digits than its factorization.

689840801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14791.

The product of its (nonzero) digits is 110592, while the sum is 44.

The square root of 689840801 is about 26264.8205971410. The cubic root of 689840801 is about 883.5876270678.

The spelling of 689840801 in words is "six hundred eighty-nine million, eight hundred forty thousand, eight hundred one".