745431998 has 8 divisors (see below), whose sum is σ = 1120216440. Its totient is φ = 372026520.

The previous prime is 745431989. The next prime is 745432003. The reversal of 745431998 is 899134547.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 343388 + ... + 345551.

It is an arithmetic number, because the mean of its divisors is an integer number (140027055).

Almost surely, 2^745431998 is an apocalyptic number.

745431998 is a deficient number, since it is larger than the sum of its proper divisors (374784442).

745431998 is a wasteful number, since it uses less digits than its factorization.

745431998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689482.

The product of its digits is 1088640, while the sum is 50.

The square root of 745431998 is about 27302.6005721067. The cubic root of 745431998 is about 906.7119586719.

The spelling of 745431998 in words is "seven hundred forty-five million, four hundred thirty-one thousand, nine hundred ninety-eight".