689766801 has 4 divisors (see below), whose sum is σ = 919689072. Its totient is φ = 459844532.

The previous prime is 689766799. The next prime is 689766811. The reversal of 689766801 is 108667986.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 689766801 - 2¹ = 689766799 is a prime.

It is not an unprimeable number, because it can be changed into a prime (689766811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114961131 + ... + 114961136.

It is an arithmetic number, because the mean of its divisors is an integer number (229922268).

Almost surely, 2^689766801 is an apocalyptic number.

It is an amenable number.

689766801 is a deficient number, since it is larger than the sum of its proper divisors (229922271).

689766801 is a wasteful number, since it uses less digits than its factorization.

689766801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229922270.

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 689766801 is about 26263.4118309103. The cubic root of 689766801 is about 883.5560314579.

The spelling of 689766801 in words is "six hundred eighty-nine million, seven hundred sixty-six thousand, eight hundred one".