82737215 has 32 divisors (see below), whose sum is σ = 115893504. Its totient is φ = 56035840.

The previous prime is 82737211. The next prime is 82737227. The reversal of 82737215 is 51273728.

It is a Cunningham number, because it is equal to 9096²-1.

It is not a de Polignac number, because 82737215 - 2² = 82737211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82737211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99632 + ... + 100458.

It is an arithmetic number, because the mean of its divisors is an integer number (3621672).

Almost surely, 2^82737215 is an apocalyptic number.

82737215 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

82737215 is a deficient number, since it is larger than the sum of its proper divisors (33156289).

82737215 is a wasteful number, since it uses less digits than its factorization.

82737215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967.

The product of its digits is 23520, while the sum is 35.

The square root of 82737215 is about 9095.9999450308. Note that the first 4 decimals coincide. The cubic root of 82737215 is about 435.7462243260.

The spelling of 82737215 in words is "eighty-two million, seven hundred thirty-seven thousand, two hundred fifteen".