82761648 has 20 divisors (see below), whose sum is σ = 213801048. Its totient is φ = 27587200.

The previous prime is 82761631. The next prime is 82761649. The reversal of 82761648 is 84616728.

It is not an unprimeable number, because it can be changed into a prime (82761649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 862053 + ... + 862148.

Almost surely, 2^82761648 is an apocalyptic number.

It is an amenable number.

82761648 is an abundant number, since it is smaller than the sum of its proper divisors (131039400).

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

82761648 is a wasteful number, since it uses less digits than its factorization.

82761648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1724212 (or 1724206 counting only the distinct ones).

The product of its digits is 129024, while the sum is 42.

The square root of 82761648 is about 9097.3429087839. The cubic root of 82761648 is about 435.7891132874.

The spelling of 82761648 in words is "eighty-two million, seven hundred sixty-one thousand, six hundred forty-eight".