745701398 has 16 divisors (see below), whose sum is σ = 1267995120. Its totient is φ = 326055456.

The previous prime is 745701391. The next prime is 745701403. The reversal of 745701398 is 893107547.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745701391) 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 7 ways as a sum of consecutive naturals, for example, 754265 + ... + 755252.

It is an arithmetic number, because the mean of its divisors is an integer number (79249695).

Almost surely, 2^745701398 is an apocalyptic number.

745701398 is a deficient number, since it is larger than the sum of its proper divisors (522293722).

745701398 is a wasteful number, since it uses less digits than its factorization.

745701398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1509551.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 745701398 is about 27307.5337223998. The cubic root of 745701398 is about 906.8211744385.

The spelling of 745701398 in words is "seven hundred forty-five million, seven hundred one thousand, three hundred ninety-eight".