745196761 has 4 divisors (see below), whose sum is σ = 765337252. Its totient is φ = 725056272.

The previous prime is 745196747. The next prime is 745196779. The reversal of 745196761 is 167691547.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 167691547 = 167 ⋅1004141.

It can be written as a sum of positive squares in 2 ways, for example, as 405015625 + 340181136 = 20125^2 + 18444^2 .

It is a cyclic number.

It is not a de Polignac number, because 745196761 - 2⁷ = 745196633 is a prime.

It is a super-2 number, since 2×745196761² = 1110636425209782242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745196791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10070190 + ... + 10070263.

It is an arithmetic number, because the mean of its divisors is an integer number (191334313).

Almost surely, 2^745196761 is an apocalyptic number.

It is an amenable number.

745196761 is a deficient number, since it is larger than the sum of its proper divisors (20140491).

745196761 is a wasteful number, since it uses less digits than its factorization.

745196761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20140490.

The product of its digits is 317520, while the sum is 46.

The square root of 745196761 is about 27298.2922725946. The cubic root of 745196761 is about 906.6165711911.

It can be divided in two parts, 745 and 196761, that added together give a triangular number (197506 = T₆₂₈).

The spelling of 745196761 in words is "seven hundred forty-five million, one hundred ninety-six thousand, seven hundred sixty-one".