82701261 has 12 divisors (see below), whose sum is σ = 124651488. Its totient is φ = 52736904.

The previous prime is 82701221. The next prime is 82701287. The reversal of 82701261 is 16210728.

It is not a de Polignac number, because 82701261 - 2¹⁵ = 82668493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82701221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 199555 + ... + 199968.

It is an arithmetic number, because the mean of its divisors is an integer number (10387624).

Almost surely, 2^82701261 is an apocalyptic number.

It is an amenable number.

82701261 is a deficient number, since it is larger than the sum of its proper divisors (41950227).

82701261 is a wasteful number, since it uses less digits than its factorization.

82701261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399552 (or 399549 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 82701261 is about 9094.0233670252. The cubic root of 82701261 is about 435.6830963866.

Adding to 82701261 its reverse (16210728), we get a palindrome (98911989).

The spelling of 82701261 in words is "eighty-two million, seven hundred one thousand, two hundred sixty-one".