67689245 has 8 divisors (see below), whose sum is σ = 87475416. Its totient is φ = 49985856.

The previous prime is 67689241. The next prime is 67689269. The reversal of 67689245 is 54298676.

It can be written as a sum of positive squares in 4 ways, for example, as 6255001 + 61434244 = 2501^2 + 7838^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67689245 - 2² = 67689241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67689245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67689241) 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, 520622 + ... + 520751.

It is an arithmetic number, because the mean of its divisors is an integer number (10934427).

Almost surely, 2^67689245 is an apocalyptic number.

67689245 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

67689245 is a deficient number, since it is larger than the sum of its proper divisors (19786171).

67689245 is a wasteful number, since it uses less digits than its factorization.

67689245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041391.

The product of its digits is 725760, while the sum is 47.

The square root of 67689245 is about 8227.3473853971. The cubic root of 67689245 is about 407.5427985209.

It can be divided in two parts, 676 and 89245, that multiplied together give a triangular number (60329620 = T₁₀₉₈₄).

The spelling of 67689245 in words is "sixty-seven million, six hundred eighty-nine thousand, two hundred forty-five".