689974461 has 24 divisors (see below), whose sum is σ = 1151190144. Its totient is φ = 393567360.

The previous prime is 689974459. The next prime is 689974501. The reversal of 689974461 is 164479986.

It is not a de Polignac number, because 689974461 - 2¹ = 689974459 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 689974398 and 689974407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689974661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 203301 + ... + 206666.

It is an arithmetic number, because the mean of its divisors is an integer number (47966256).

Almost surely, 2^689974461 is an apocalyptic number.

It is an amenable number.

689974461 is a deficient number, since it is larger than the sum of its proper divisors (461215683).

689974461 is a wasteful number, since it uses less digits than its factorization.

689974461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410001 (or 409998 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 689974461 is about 26267.3649420721. The cubic root of 689974461 is about 883.6446898449.

The spelling of 689974461 in words is "six hundred eighty-nine million, nine hundred seventy-four thousand, four hundred sixty-one".