67898947 has 4 divisors (see below), whose sum is σ = 70240320. Its totient is φ = 65557576.

The previous prime is 67898923. The next prime is 67899011. The reversal of 67898947 is 74989876.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 67898947 - 2¹⁵ = 67866179 is a prime.

It is a super-2 number, since 2×67898947² = 9220534007417618, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 67898891 and 67898900.

It is not an unprimeable number, because it can be changed into a prime (67898147) 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, 1170643 + ... + 1170700.

It is an arithmetic number, because the mean of its divisors is an integer number (17560080).

Almost surely, 2^67898947 is an apocalyptic number.

67898947 is a deficient number, since it is larger than the sum of its proper divisors (2341373).

67898947 is a wasteful number, since it uses less digits than its factorization.

67898947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2341372.

The product of its digits is 6096384, while the sum is 58.

The square root of 67898947 is about 8240.0817350315. The cubic root of 67898947 is about 407.9632219668.

The spelling of 67898947 in words is "sixty-seven million, eight hundred ninety-eight thousand, nine hundred forty-seven".