67983615 has 96 divisors (see below), whose sum is σ = 146065920. Its totient is φ = 28553472.

The previous prime is 67983613. The next prime is 67983623. The reversal of 67983615 is 51638976.

It is a happy number.

It is not a de Polignac number, because 67983615 - 2¹ = 67983613 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

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

Its product of digits (272160) is a multiple of the sum of its prime divisors (378).

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67983611) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 221292 + ... + 221598.

It is an arithmetic number, because the mean of its divisors is an integer number (1521520).

Almost surely, 2^67983615 is an apocalyptic number.

67983615 is an abundant number, since it is smaller than the sum of its proper divisors (78082305).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67983615 is a wasteful number, since it uses less digits than its factorization.

67983615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381 (or 378 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 67983615 is about 8245.2177048274. The cubic root of 67983615 is about 408.1327242647.

The spelling of 67983615 in words is "sixty-seven million, nine hundred eighty-three thousand, six hundred fifteen".