67714821 has 12 divisors (see below), whose sum is σ = 100196460. Its totient is φ = 44041920.

The previous prime is 67714811. The next prime is 67714837. The reversal of 67714821 is 12841776.

It can be written as a sum of positive squares in 2 ways, for example, as 5225796 + 62489025 = 2286^2 + 7905^2 .

It is not a de Polignac number, because 67714821 - 2¹⁵ = 67682053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67714811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91386 + ... + 92123.

It is an arithmetic number, because the mean of its divisors is an integer number (8349705).

Almost surely, 2^67714821 is an apocalyptic number.

It is an amenable number.

67714821 is a deficient number, since it is larger than the sum of its proper divisors (32481639).

67714821 is a wasteful number, since it uses less digits than its factorization.

67714821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183556 (or 183553 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 67714821 is about 8228.9015670380. The cubic root of 67714821 is about 407.5941213078.

The spelling of 67714821 in words is "sixty-seven million, seven hundred fourteen thousand, eight hundred twenty-one".