67736745 has 12 divisors (see below), whose sum is σ = 117410436. Its totient is φ = 36126240.

The previous prime is 67736737. The next prime is 67736783. The reversal of 67736745 is 54763776.

It can be written as a sum of positive squares in 2 ways, for example, as 9809424 + 57927321 = 3132^2 + 7611^2 .

It is not a de Polignac number, because 67736745 - 2³ = 67736737 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1505261 = 67736745 / (6 + 7 + 7 + 3 + 6 + 7 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 67736745.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 752586 + ... + 752675.

It is an arithmetic number, because the mean of its divisors is an integer number (9784203).

Almost surely, 2^67736745 is an apocalyptic number.

It is an amenable number.

67736745 is a deficient number, since it is larger than the sum of its proper divisors (49673691).

67736745 is a wasteful number, since it uses less digits than its factorization.

67736745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1505272 (or 1505269 counting only the distinct ones).

The product of its digits is 740880, while the sum is 45.

The square root of 67736745 is about 8230.2335932828. The cubic root of 67736745 is about 407.6381054221.

The spelling of 67736745 in words is "sixty-seven million, seven hundred thirty-six thousand, seven hundred forty-five".