82649770 has 24 divisors (see below), whose sum is σ = 173059524. Its totient is φ = 28336896.

The previous prime is 82649759. The next prime is 82649783. The reversal of 82649770 is 7794628.

It can be written as a sum of positive squares in 2 ways, for example, as 79156609 + 3493161 = 8897^2 + 1869^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 83847 + ... + 84826.

Almost surely, 2^82649770 is an apocalyptic number.

82649770 is an abundant number, since it is smaller than the sum of its proper divisors (90409754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82649770 is a wasteful number, since it uses less digits than its factorization.

82649770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168694 (or 168687 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 82649770 is about 9091.1918910559. The cubic root of 82649770 is about 435.5926567508.

The spelling of 82649770 in words is "eighty-two million, six hundred forty-nine thousand, seven hundred seventy".