745815461 has 16 divisors (see below), whose sum is σ = 776245680. Its totient is φ = 716052480.

The previous prime is 745815439. The next prime is 745815479. The reversal of 745815461 is 164518547.

It can be written as a sum of positive squares in 8 ways, for example, as 487570561 + 258244900 = 22081^2 + 16070^2 .

It is a cyclic number.

It is not a de Polignac number, because 745815461 - 2⁶ = 745815397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745815061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1141811 + ... + 1142463.

It is an arithmetic number, because the mean of its divisors is an integer number (48515355).

Almost surely, 2^745815461 is an apocalyptic number.

It is an amenable number.

745815461 is a deficient number, since it is larger than the sum of its proper divisors (30430219).

745815461 is a wasteful number, since it uses less digits than its factorization.

745815461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096.

The product of its digits is 134400, while the sum is 41.

The square root of 745815461 is about 27309.6221321350. The cubic root of 745815461 is about 906.8674080786.

The spelling of 745815461 in words is "seven hundred forty-five million, eight hundred fifteen thousand, four hundred sixty-one".