667227461 has 2 divisors, whose sum is σ = 667227462. Its totient is φ = 667227460.

The previous prime is 667227439. The next prime is 667227479. The reversal of 667227461 is 164722766.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 538518436 + 128709025 = 23206^2 + 11345^2 .

It is a cyclic number.

It is not a de Polignac number, because 667227461 - 2¹⁰ = 667226437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667227061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333613730 + 333613731.

It is an arithmetic number, because the mean of its divisors is an integer number (333613731).

Almost surely, 2^667227461 is an apocalyptic number.

It is an amenable number.

667227461 is a deficient number, since it is larger than the sum of its proper divisors (1).

667227461 is an equidigital number, since it uses as much as digits as its factorization.

667227461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 41.

The square root of 667227461 is about 25830.7464274651. The cubic root of 667227461 is about 873.8253455724.

The spelling of 667227461 in words is "six hundred sixty-seven million, two hundred twenty-seven thousand, four hundred sixty-one".