67077945 has 24 divisors (see below), whose sum is σ = 126839232. Its totient is φ = 32522400.

The previous prime is 67077931. The next prime is 67077947. The reversal of 67077945 is 54977076.

It is not a de Polignac number, because 67077945 - 2¹² = 67073849 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 67077945.

It is not an unprimeable number, because it can be changed into a prime (67077947) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67261 + ... + 68250.

It is an arithmetic number, because the mean of its divisors is an integer number (5284968).

Almost surely, 2^67077945 is an apocalyptic number.

It is an amenable number.

67077945 is a deficient number, since it is larger than the sum of its proper divisors (59761287).

67077945 is a wasteful number, since it uses less digits than its factorization.

67077945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135533 (or 135530 counting only the distinct ones).

The product of its (nonzero) digits is 370440, while the sum is 45.

The square root of 67077945 is about 8190.1126365881. The cubic root of 67077945 is about 406.3122501847.

The spelling of 67077945 in words is "sixty-seven million, seventy-seven thousand, nine hundred forty-five".