207649481 has 8 divisors (see below), whose sum is σ = 224112000. Its totient is φ = 191256912.

The previous prime is 207649471. The next prime is 207649517. The reversal of 207649481 is 184946702.

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 207649481 - 2²² = 203455177 is a prime.

It is a super-2 number, since 2×207649481² = 86236613919138722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (207649471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11231 + ... + 23268.

It is an arithmetic number, because the mean of its divisors is an integer number (28014000).

Almost surely, 2^207649481 is an apocalyptic number.

It is an amenable number.

207649481 is a deficient number, since it is larger than the sum of its proper divisors (16462519).

207649481 is a wasteful number, since it uses less digits than its factorization.

207649481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34975.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 207649481 is about 14410.0479180328. The cubic root of 207649481 is about 592.1662024597.

The spelling of 207649481 in words is "two hundred seven million, six hundred forty-nine thousand, four hundred eighty-one".