68487261 has 32 divisors (see below), whose sum is σ = 100058112. Its totient is φ = 41543040.

The previous prime is 68487257. The next prime is 68487269. The reversal of 68487261 is 16278486.

It is not a de Polignac number, because 68487261 - 2² = 68487257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68487269) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121366 + ... + 121928.

It is an arithmetic number, because the mean of its divisors is an integer number (3126816).

Almost surely, 2^68487261 is an apocalyptic number.

It is an amenable number.

68487261 is a deficient number, since it is larger than the sum of its proper divisors (31570851).

68487261 is a wasteful number, since it uses less digits than its factorization.

68487261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673.

The product of its digits is 129024, while the sum is 42.

The square root of 68487261 is about 8275.7030517050. The cubic root of 68487261 is about 409.1381081210.

The spelling of 68487261 in words is "sixty-eight million, four hundred eighty-seven thousand, two hundred sixty-one".