67421474 has 8 divisors (see below), whose sum is σ = 103865628. Its totient is φ = 32799600.

The previous prime is 67421461. The next prime is 67421521. The reversal of 67421474 is 47412476.

It can be written as a sum of positive squares in 2 ways, for example, as 66308449 + 1113025 = 8143^2 + 1055^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 455477 + ... + 455624.

Almost surely, 2^67421474 is an apocalyptic number.

67421474 is a deficient number, since it is larger than the sum of its proper divisors (36444154).

67421474 is a wasteful number, since it uses less digits than its factorization.

67421474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911140.

The product of its digits is 37632, while the sum is 35.

The square root of 67421474 is about 8211.0580317033. The cubic root of 67421474 is about 407.0046905870.

The spelling of 67421474 in words is "sixty-seven million, four hundred twenty-one thousand, four hundred seventy-four".