67662461 has 2 divisors, whose sum is σ = 67662462. Its totient is φ = 67662460.

The previous prime is 67662457. The next prime is 67662487. The reversal of 67662461 is 16426676.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37136836 + 30525625 = 6094^2 + 5525^2 .

It is a cyclic number.

It is not a de Polignac number, because 67662461 - 2² = 67662457 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67662421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33831230 + 33831231.

It is an arithmetic number, because the mean of its divisors is an integer number (33831231).

Almost surely, 2^67662461 is an apocalyptic number.

It is an amenable number.

67662461 is a deficient number, since it is larger than the sum of its proper divisors (1).

67662461 is an equidigital number, since it uses as much as digits as its factorization.

67662461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 38.

The square root of 67662461 is about 8225.7194822094. The cubic root of 67662461 is about 407.4890378072.

The spelling of 67662461 in words is "sixty-seven million, six hundred sixty-two thousand, four hundred sixty-one".