731466561 has 12 divisors (see below), whose sum is σ = 1134519792. Its totient is φ = 417980808.

The previous prime is 731466559. The next prime is 731466563. The reversal of 731466561 is 165664137.

It is an interprime number because it is at equal distance from previous prime (731466559) and next prime (731466563).

It is not a de Polignac number, because 731466561 - 2¹ = 731466559 is a prime.

It is a super-2 number, since 2×731466561² = 1070086659722333442, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (731466563) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2487835 + ... + 2488128.

It is an arithmetic number, because the mean of its divisors is an integer number (94543316).

Almost surely, 2^731466561 is an apocalyptic number.

It is an amenable number.

731466561 is a deficient number, since it is larger than the sum of its proper divisors (403053231).

731466561 is a wasteful number, since it uses less digits than its factorization.

731466561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4975980 (or 4975973 counting only the distinct ones).

The product of its digits is 90720, while the sum is 39.

The square root of 731466561 is about 27045.6384838665. The cubic root of 731466561 is about 901.0139030286.

The spelling of 731466561 in words is "seven hundred thirty-one million, four hundred sixty-six thousand, five hundred sixty-one".