67473730 has 8 divisors (see below), whose sum is σ = 121452732. Its totient is φ = 26989488.

The previous prime is 67473719. The next prime is 67473737. The reversal of 67473730 is 3737476.

It can be written as a sum of positive squares in 2 ways, for example, as 65011969 + 2461761 = 8063^2 + 1569^2 .

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

It is a super-2 number, since 2×67473730² = 9105408480225800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 67473730.

It is not an unprimeable number, because it can be changed into a prime (67473737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3373677 + ... + 3373696.

Almost surely, 2^67473730 is an apocalyptic number.

67473730 is a deficient number, since it is larger than the sum of its proper divisors (53979002).

67473730 is a wasteful number, since it uses less digits than its factorization.

67473730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6747380.

The product of its (nonzero) digits is 74088, while the sum is 37.

The square root of 67473730 is about 8214.2394657083. The cubic root of 67473730 is about 407.1098150793.

The spelling of 67473730 in words is "sixty-seven million, four hundred seventy-three thousand, seven hundred thirty".