687407053 has 16 divisors (see below), whose sum is σ = 760224960. Its totient is φ = 618782976.

The previous prime is 687407029. The next prime is 687407057. The reversal of 687407053 is 350704786.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-687407053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 687406997 and 687407015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687407057) 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, 27850 + ... + 46372.

It is an arithmetic number, because the mean of its divisors is an integer number (47514060).

Almost surely, 2^687407053 is an apocalyptic number.

It is an amenable number.

687407053 is a deficient number, since it is larger than the sum of its proper divisors (72817907).

687407053 is a wasteful number, since it uses less digits than its factorization.

687407053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18636.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 687407053 is about 26218.4487145979. The cubic root of 687407053 is about 882.5473080648.

The spelling of 687407053 in words is "six hundred eighty-seven million, four hundred seven thousand, fifty-three".