67631461 has 2 divisors, whose sum is σ = 67631462. Its totient is φ = 67631460.

The previous prime is 67631453. The next prime is 67631483. The reversal of 67631461 is 16413676.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52272900 + 15358561 = 7230^2 + 3919^2 .

It is a cyclic number.

It is not a de Polignac number, because 67631461 - 2³ = 67631453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67631761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33815730 + 33815731.

It is an arithmetic number, because the mean of its divisors is an integer number (33815731).

Almost surely, 2^67631461 is an apocalyptic number.

It is an amenable number.

67631461 is a deficient number, since it is larger than the sum of its proper divisors (1).

67631461 is an equidigital number, since it uses as much as digits as its factorization.

67631461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 34.

The square root of 67631461 is about 8223.8349326820. The cubic root of 67631461 is about 407.4267970430.

The spelling of 67631461 in words is "sixty-seven million, six hundred thirty-one thousand, four hundred sixty-one".