745173871 has 8 divisors (see below), whose sum is σ = 802769184. Its totient is φ = 687617760.

The previous prime is 745173841. The next prime is 745173931. The reversal of 745173871 is 178371547.

It is a happy number.

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 745173871 - 2¹⁹ = 744649583 is a prime.

It is a super-2 number, since 2×745173871² = 1110568196042249282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745173841) 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, 38550 + ... + 54556.

It is an arithmetic number, because the mean of its divisors is an integer number (100346148).

Almost surely, 2^745173871 is an apocalyptic number.

745173871 is a deficient number, since it is larger than the sum of its proper divisors (57595313).

745173871 is a wasteful number, since it uses less digits than its factorization.

745173871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19601.

The product of its digits is 164640, while the sum is 43.

The square root of 745173871 is about 27297.8730123796. The cubic root of 745173871 is about 906.6072883337.

The spelling of 745173871 in words is "seven hundred forty-five million, one hundred seventy-three thousand, eight hundred seventy-one".