67272661 has 2 divisors, whose sum is σ = 67272662. Its totient is φ = 67272660.

The previous prime is 67272649. The next prime is 67272671. The reversal of 67272661 is 16627276.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62568100 + 4704561 = 7910^2 + 2169^2 .

It is a cyclic number.

It is not a de Polignac number, because 67272661 - 2⁷ = 67272533 is a prime.

It is a super-2 number, since 2×67272661² = 9051221836041842, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 67272661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67272641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33636330 + 33636331.

It is an arithmetic number, because the mean of its divisors is an integer number (33636331).

Almost surely, 2^67272661 is an apocalyptic number.

It is an amenable number.

67272661 is a deficient number, since it is larger than the sum of its proper divisors (1).

67272661 is an equidigital number, since it uses as much as digits as its factorization.

67272661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 37.

The square root of 67272661 is about 8201.9912826094. The cubic root of 67272661 is about 406.7050224356.

The spelling of 67272661 in words is "sixty-seven million, two hundred seventy-two thousand, six hundred sixty-one".