745990 has 16 divisors (see below), whose sum is σ = 1534752. Its totient is φ = 255744.

The previous prime is 745981. The next prime is 745993. The reversal of 745990 is 99547.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745993) 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, 5259 + ... + 5398.

It is an arithmetic number, because the mean of its divisors is an integer number (95922).

2⁷⁴⁵⁹⁹⁰ is an apocalyptic number.

745990 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

745990 is an abundant number, since it is smaller than the sum of its proper divisors (788762).

It is a weird number, because it is abundant, but not a pseudoperfect number.

745990 is a wasteful number, since it uses less digits than its factorization.

745990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10671.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 745990 is about 863.7071262876. The cubic root of 745990 is about 90.6938145588.

The spelling of 745990 in words is "seven hundred forty-five thousand, nine hundred ninety".