67824730 has 16 divisors (see below), whose sum is σ = 129266280. Its totient is φ = 25533952.

The previous prime is 67824721. The next prime is 67824761. The reversal of 67824730 is 3742876.

It can be written as a sum of positive squares in 4 ways, for example, as 63154809 + 4669921 = 7947^2 + 2161^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 67824730.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199315 + ... + 199654.

Almost surely, 2^67824730 is an apocalyptic number.

67824730 is a deficient number, since it is larger than the sum of its proper divisors (61441550).

67824730 is a wasteful number, since it uses less digits than its factorization.

67824730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398993.

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 67824730 is about 8235.5770896762. The cubic root of 67824730 is about 407.8145262643.

The spelling of 67824730 in words is "sixty-seven million, eight hundred twenty-four thousand, seven hundred thirty".