745271651 has 8 divisors (see below), whose sum is σ = 769849344. Its totient is φ = 720727560.

The previous prime is 745271647. The next prime is 745271669. The reversal of 745271651 is 156172547.

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 745271651 - 2² = 745271647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745271851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41480 + ... + 56666.

It is an arithmetic number, because the mean of its divisors is an integer number (96231168).

Almost surely, 2^745271651 is an apocalyptic number.

745271651 is a deficient number, since it is larger than the sum of its proper divisors (24577693).

745271651 is a wasteful number, since it uses less digits than its factorization.

745271651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16801.

The product of its digits is 58800, while the sum is 38.

The square root of 745271651 is about 27299.6639356605. The cubic root of 745271651 is about 906.6469409065.

It can be divided in two parts, 74 and 5271651, that added together give a palindrome (5271725).

The spelling of 745271651 in words is "seven hundred forty-five million, two hundred seventy-one thousand, six hundred fifty-one".