82390641 has 8 divisors (see below), whose sum is σ = 109930080. Its totient is φ = 54889152.

The previous prime is 82390621. The next prime is 82390661. The reversal of 82390641 is 14609328.

It is an interprime number because it is at equal distance from previous prime (82390621) and next prime (82390661).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82390641 - 2⁹ = 82390129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82390621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3960 + ... + 13433.

It is an arithmetic number, because the mean of its divisors is an integer number (13741260).

Almost surely, 2^82390641 is an apocalyptic number.

It is an amenable number.

82390641 is a deficient number, since it is larger than the sum of its proper divisors (27539439).

82390641 is a wasteful number, since it uses less digits than its factorization.

82390641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18975.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 82390641 is about 9076.9290511714. The cubic root of 82390641 is about 435.1369472370.

Adding to 82390641 its reverse (14609328), we get a palindrome (96999969).

The spelling of 82390641 in words is "eighty-two million, three hundred ninety thousand, six hundred forty-one".