745905 has 8 divisors (see below), whose sum is σ = 1193472. Its totient is φ = 397808.

The previous prime is 745903. The next prime is 745931. The reversal of 745905 is 509547.

745905 = 195² + 196² + ... + 212².

745905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 745905 - 2¹ = 745903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (745903) 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, 24849 + ... + 24878.

It is an arithmetic number, because the mean of its divisors is an integer number (149184).

2⁷⁴⁵⁹⁰⁵ is an apocalyptic number.

It is an amenable number.

745905 is a deficient number, since it is larger than the sum of its proper divisors (447567).

745905 is a wasteful number, since it uses less digits than its factorization.

745905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49735.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 745905 is about 863.6579183913. The cubic root of 745905 is about 90.6903697999.

The spelling of 745905 in words is "seven hundred forty-five thousand, nine hundred five".