745021147 has 16 divisors (see below), whose sum is σ = 812452032. Its totient is φ = 679075200.

The previous prime is 745021117. The next prime is 745021157. The reversal of 745021147 is 741120547.

It is a cyclic number.

It is not a de Polignac number, because 745021147 - 2⁷ = 745021019 is a prime.

It is a super-4 number, since 4×745021147⁴ (a number of 37 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745021117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 849073 + ... + 849949.

It is an arithmetic number, because the mean of its divisors is an integer number (50778252).

Almost surely, 2^745021147 is an apocalyptic number.

745021147 is a deficient number, since it is larger than the sum of its proper divisors (67430885).

745021147 is a wasteful number, since it uses less digits than its factorization.

745021147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638.

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 745021147 is about 27295.0755082304. The cubic root of 745021147 is about 906.5453474645.

The spelling of 745021147 in words is "seven hundred forty-five million, twenty-one thousand, one hundred forty-seven".