745915 has 4 divisors (see below), whose sum is σ = 895104. Its totient is φ = 596728.

The previous prime is 745903. The next prime is 745931. The reversal of 745915 is 519547.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 745915 - 2¹⁵ = 713147 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74587 + ... + 74596.

It is an arithmetic number, because the mean of its divisors is an integer number (223776).

2⁷⁴⁵⁹¹⁵ is an apocalyptic number.

745915 is a deficient number, since it is larger than the sum of its proper divisors (149189).

745915 is a wasteful number, since it uses less digits than its factorization.

745915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149188.

The product of its digits is 6300, while the sum is 31.

The square root of 745915 is about 863.6637077011. The cubic root of 745915 is about 90.6907750793.

The spelling of 745915 in words is "seven hundred forty-five thousand, nine hundred fifteen".