82619906 has 4 divisors (see below), whose sum is σ = 123929862. Its totient is φ = 41309952.

The previous prime is 82619893. The next prime is 82619963. The reversal of 82619906 is 60991628.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 80263681 + 2356225 = 8959^2 + 1535^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20654975 + ... + 20654978.

Almost surely, 2^82619906 is an apocalyptic number.

82619906 is a deficient number, since it is larger than the sum of its proper divisors (41309956).

82619906 is a wasteful number, since it uses less digits than its factorization.

82619906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41309955.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 82619906 is about 9089.5492737539. The cubic root of 82619906 is about 435.5401859203.

The spelling of 82619906 in words is "eighty-two million, six hundred nineteen thousand, nine hundred six".