745041691 has 8 divisors (see below), whose sum is σ = 778709664. Its totient is φ = 711480000.

The previous prime is 745041683. The next prime is 745041707. The reversal of 745041691 is 196140547.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 745041691 - 2³ = 745041683 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 745041691.

It is not an unprimeable number, because it can be changed into a prime (745041641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12060 + ... + 40441.

It is an arithmetic number, because the mean of its divisors is an integer number (97338708).

Almost surely, 2^745041691 is an apocalyptic number.

745041691 is a deficient number, since it is larger than the sum of its proper divisors (33667973).

745041691 is a wasteful number, since it uses less digits than its factorization.

745041691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53141.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 745041691 is about 27295.4518372567. The cubic root of 745041691 is about 906.5536800676.

It can be divided in two parts, 7450 and 41691, that added together give a triangular number (49141 = T₃₁₃).

The spelling of 745041691 in words is "seven hundred forty-five million, forty-one thousand, six hundred ninety-one".