745715 has 4 divisors (see below), whose sum is σ = 894864. Its totient is φ = 596568.

The previous prime is 745711. The next prime is 745727. The reversal of 745715 is 517547.

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 745715 - 2² = 745711 is a prime.

It is a super-2 number, since 2×745715² = 1112181722450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74567 + ... + 74576.

It is an arithmetic number, because the mean of its divisors is an integer number (223716).

2⁷⁴⁵⁷¹⁵ is an apocalyptic number.

745715 is a deficient number, since it is larger than the sum of its proper divisors (149149).

745715 is a wasteful number, since it uses less digits than its factorization.

745715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149148.

The product of its digits is 4900, while the sum is 29.

The square root of 745715 is about 863.5479141310. The cubic root of 745715 is about 90.6826688043.

The spelling of 745715 in words is "seven hundred forty-five thousand, seven hundred fifteen".