745087 has 4 divisors (see below), whose sum is σ = 851536. Its totient is φ = 638640.

The previous prime is 745067. The next prime is 745103. The reversal of 745087 is 780547.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 780547 = 631 ⋅1237.

It is a cyclic number.

It is not a de Polignac number, because 745087 - 2⁷ = 744959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53214 + ... + 53227.

It is an arithmetic number, because the mean of its divisors is an integer number (212884).

2⁷⁴⁵⁰⁸⁷ is an apocalyptic number.

745087 is a deficient number, since it is larger than the sum of its proper divisors (106449).

745087 is a wasteful number, since it uses less digits than its factorization.

745087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106448.

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 745087 is about 863.1842213572. The cubic root of 745087 is about 90.6572056761.

The spelling of 745087 in words is "seven hundred forty-five thousand, eighty-seven".