67999471 has 8 divisors (see below), whose sum is σ = 69033600. Its totient is φ = 66971520.

The previous prime is 67999453. The next prime is 67999501. The reversal of 67999471 is 17499976.

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 67999471 - 2¹⁹ = 67475183 is a prime.

It is a super-3 number, since 3×67999471³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67999411) 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, 23650 + ... + 26368.

It is an arithmetic number, because the mean of its divisors is an integer number (8629200).

Almost surely, 2^67999471 is an apocalyptic number.

67999471 is a deficient number, since it is larger than the sum of its proper divisors (1034129).

67999471 is a wasteful number, since it uses less digits than its factorization.

67999471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3089.

The product of its digits is 857304, while the sum is 52.

The square root of 67999471 is about 8246.1791758365. The cubic root of 67999471 is about 408.1644517598.

The spelling of 67999471 in words is "sixty-seven million, nine hundred ninety-nine thousand, four hundred seventy-one".