687072673 has 8 divisors (see below), whose sum is σ = 790958592. Its totient is φ = 584619936.

The previous prime is 687072653. The next prime is 687072679. The reversal of 687072673 is 376270786.

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 687072673 - 2¹⁷ = 686941601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (687072679) 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, 357265 + ... + 359182.

It is an arithmetic number, because the mean of its divisors is an integer number (98869824).

Almost surely, 2^687072673 is an apocalyptic number.

It is an amenable number.

687072673 is a deficient number, since it is larger than the sum of its proper divisors (103885919).

687072673 is a wasteful number, since it uses less digits than its factorization.

687072673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716591.

The product of its (nonzero) digits is 592704, while the sum is 46.

The square root of 687072673 is about 26212.0711314463. The cubic root of 687072673 is about 882.4041837298.

The spelling of 687072673 in words is "six hundred eighty-seven million, seventy-two thousand, six hundred seventy-three".