745477331 has 8 divisors (see below), whose sum is σ = 798014400. Its totient is φ = 694270440.

The previous prime is 745477321. The next prime is 745477333. The reversal of 745477331 is 133774547.

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 745477331 - 2⁶ = 745477267 is a prime.

It is a super-2 number, since 2×745477331² = 1111472902069767122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745477333) 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, 331385 + ... + 333626.

It is an arithmetic number, because the mean of its divisors is an integer number (99751800).

Almost surely, 2^745477331 is an apocalyptic number.

745477331 is a deficient number, since it is larger than the sum of its proper divisors (52537069).

745477331 is a wasteful number, since it uses less digits than its factorization.

745477331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665089.

The product of its digits is 246960, while the sum is 41.

The square root of 745477331 is about 27303.4307551267. The cubic root of 745477331 is about 906.7303386807.

The spelling of 745477331 in words is "seven hundred forty-five million, four hundred seventy-seven thousand, three hundred thirty-one".