456747661 has 2 divisors, whose sum is σ = 456747662. Its totient is φ = 456747660.

The previous prime is 456747649. The next prime is 456747671. The reversal of 456747661 is 166747654.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 422302500 + 34445161 = 20550^2 + 5869^2 .

It is a cyclic number.

It is not a de Polignac number, because 456747661 - 2²¹ = 454650509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (456747611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 228373830 + 228373831.

It is an arithmetic number, because the mean of its divisors is an integer number (228373831).

Almost surely, 2^456747661 is an apocalyptic number.

It is an amenable number.

456747661 is a deficient number, since it is larger than the sum of its proper divisors (1).

456747661 is an equidigital number, since it uses as much as digits as its factorization.

456747661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 46.

The square root of 456747661 is about 21371.6555512202. The cubic root of 456747661 is about 770.1206652973.

It can be divided in two parts, 45674 and 7661, that added together give a palindrome (53335).

The spelling of 456747661 in words is "four hundred fifty-six million, seven hundred forty-seven thousand, six hundred sixty-one".