745978306 has 16 divisors (see below), whose sum is σ = 1133758080. Its totient is φ = 368081280.

The previous prime is 745978301. The next prime is 745978307. The reversal of 745978306 is 603879547.

745978306 = 234² + 235² + ... + 1310².

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 745978306.

It is not an unprimeable number, because it can be changed into a prime (745978301) 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, 64291 + ... + 75001.

It is an arithmetic number, because the mean of its divisors is an integer number (70859880).

Almost surely, 2^745978306 is an apocalyptic number.

745978306 is a deficient number, since it is larger than the sum of its proper divisors (387779774).

745978306 is a wasteful number, since it uses less digits than its factorization.

745978306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11169.

The product of its (nonzero) digits is 1270080, while the sum is 49.

The square root of 745978306 is about 27312.6034277218. The cubic root of 745978306 is about 906.9334065657.

The spelling of 745978306 in words is "seven hundred forty-five million, nine hundred seventy-eight thousand, three hundred six".