745617461 has 2 divisors, whose sum is σ = 745617462. Its totient is φ = 745617460.

The previous prime is 745617449. The next prime is 745617491. The reversal of 745617461 is 164716547.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 471714961 + 273902500 = 21719^2 + 16550^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-745617461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745617421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372808730 + 372808731.

It is an arithmetic number, because the mean of its divisors is an integer number (372808731).

Almost surely, 2^745617461 is an apocalyptic number.

It is an amenable number.

745617461 is a deficient number, since it is larger than the sum of its proper divisors (1).

745617461 is an equidigital number, since it uses as much as digits as its factorization.

745617461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 41.

The square root of 745617461 is about 27305.9967955759. The cubic root of 745617461 is about 906.7871488866.

The spelling of 745617461 in words is "seven hundred forty-five million, six hundred seventeen thousand, four hundred sixty-one".