745628947 has 16 divisors (see below), whose sum is σ = 882800640. Its totient is φ = 616184352.

The previous prime is 745628941. The next prime is 745628969. The reversal of 745628947 is 749826547.

It is not a de Polignac number, because 745628947 - 2¹⁵ = 745596179 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 745628894 and 745628903.

It is not an unprimeable number, because it can be changed into a prime (745628941) 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, 164838 + ... + 169300.

It is an arithmetic number, because the mean of its divisors is an integer number (55175040).

Almost surely, 2^745628947 is an apocalyptic number.

745628947 is a deficient number, since it is larger than the sum of its proper divisors (137171693).

745628947 is a wasteful number, since it uses less digits than its factorization.

745628947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5322.

The product of its digits is 3386880, while the sum is 52.

The square root of 745628947 is about 27306.2071148668. The cubic root of 745628947 is about 906.7918051186.

The spelling of 745628947 in words is "seven hundred forty-five million, six hundred twenty-eight thousand, nine hundred forty-seven".