67390745 has 16 divisors (see below), whose sum is σ = 83939328. Its totient is φ = 51885120.

The previous prime is 67390717. The next prime is 67390769. The reversal of 67390745 is 54709376.

It is not a de Polignac number, because 67390745 - 2⁶ = 67390681 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29432 + ... + 31638.

It is an arithmetic number, because the mean of its divisors is an integer number (5246208).

Almost surely, 2^67390745 is an apocalyptic number.

It is an amenable number.

67390745 is a deficient number, since it is larger than the sum of its proper divisors (16548583).

67390745 is a wasteful number, since it uses less digits than its factorization.

67390745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2440.

The product of its (nonzero) digits is 158760, while the sum is 41.

The square root of 67390745 is about 8209.1866223153. The cubic root of 67390745 is about 406.9428470478.

The spelling of 67390745 in words is "sixty-seven million, three hundred ninety thousand, seven hundred forty-five".