687461541 has 16 divisors (see below), whose sum is σ = 994904064. Its totient is φ = 419719104.

The previous prime is 687461539. The next prime is 687461581. The reversal of 687461541 is 145164786.

It is not a de Polignac number, because 687461541 - 2¹ = 687461539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 687461493 and 687461502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687461581) 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, 64446 + ... + 74351.

It is an arithmetic number, because the mean of its divisors is an integer number (62181504).

Almost surely, 2^687461541 is an apocalyptic number.

It is an amenable number.

687461541 is a deficient number, since it is larger than the sum of its proper divisors (307442523).

687461541 is a wasteful number, since it uses less digits than its factorization.

687461541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138940.

The product of its digits is 161280, while the sum is 42.

The square root of 687461541 is about 26219.4878096427. The cubic root of 687461541 is about 882.5706261105.

The spelling of 687461541 in words is "six hundred eighty-seven million, four hundred sixty-one thousand, five hundred forty-one".