83758649 has 16 divisors (see below), whose sum is σ = 91808640. Its totient is φ = 75953280.

The previous prime is 83758601. The next prime is 83758693. The reversal of 83758649 is 94685738.

It is not a de Polignac number, because 83758649 - 2⁸ = 83758393 is a prime.

It is a super-2 number, since 2×83758649² = 14031022564610402, which contains 22 as substring.

It is a Duffinian number.

Its product of digits (1451520) is a multiple of the sum of its prime divisors (640).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 83758597 and 83758606.

It is not an unprimeable number, because it can be changed into a prime (83778649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 233132 + ... + 233490.

It is an arithmetic number, because the mean of its divisors is an integer number (5738040).

Almost surely, 2^83758649 is an apocalyptic number.

It is an amenable number.

83758649 is a deficient number, since it is larger than the sum of its proper divisors (8049991).

83758649 is a wasteful number, since it uses less digits than its factorization.

83758649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640.

The product of its digits is 1451520, while the sum is 50.

The square root of 83758649 is about 9151.9751420117. The cubic root of 83758649 is about 437.5320666564.

The spelling of 83758649 in words is "eighty-three million, seven hundred fifty-eight thousand, six hundred forty-nine".