172985337 has 36 divisors (see below), whose sum is σ = 292131840. Its totient is φ = 98349552.

The previous prime is 172985317. The next prime is 172985339. The reversal of 172985337 is 733589271.

It is a happy number.

It is not a de Polignac number, because 172985337 - 2⁷ = 172985209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 172985292 and 172985301.

It is not an unprimeable number, because it can be changed into a prime (172985339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 97464 + ... + 99222.

Almost surely, 2^172985337 is an apocalyptic number.

It is an amenable number.

172985337 is a deficient number, since it is larger than the sum of its proper divisors (119146503).

172985337 is a wasteful number, since it uses less digits than its factorization.

172985337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2002 (or 1992 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 172985337 is about 13152.3890225312. The cubic root of 172985337 is about 557.1897227131.

The spelling of 172985337 in words is "one hundred seventy-two million, nine hundred eighty-five thousand, three hundred thirty-seven".