67902985 has 8 divisors (see below), whose sum is σ = 81742536. Its totient is φ = 54149760.

The previous prime is 67902973. The next prime is 67903013. The reversal of 67902985 is 58920976.

It can be written as a sum of positive squares in 4 ways, for example, as 4875264 + 63027721 = 2208^2 + 7939^2 .

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

It is not a de Polignac number, because 67902985 - 2⁵ = 67902953 is a prime.

It is a super-2 number, since 2×67902985² = 9221630743820450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19836 + ... + 23005.

It is an arithmetic number, because the mean of its divisors is an integer number (10217817).

Almost surely, 2^67902985 is an apocalyptic number.

It is an amenable number.

67902985 is a deficient number, since it is larger than the sum of its proper divisors (13839551).

67902985 is a wasteful number, since it uses less digits than its factorization.

67902985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43163.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 67902985 is about 8240.3267532301. The cubic root of 67902985 is about 407.9713090968.

Subtracting from 67902985 its reverse (58920976), we obtain a square (8982009 = 2997²).

The spelling of 67902985 in words is "sixty-seven million, nine hundred two thousand, nine hundred eighty-five".