82870407 has 6 divisors (see below), whose sum is σ = 119701712. Its totient is φ = 55246932.

The previous prime is 82870387. The next prime is 82870423. The reversal of 82870407 is 70407828.

It is not a de Polignac number, because 82870407 - 2¹⁹ = 82346119 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 (82870807) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4603903 + ... + 4603920.

Almost surely, 2^82870407 is an apocalyptic number.

82870407 is a deficient number, since it is larger than the sum of its proper divisors (36831305).

82870407 is a wasteful number, since it uses less digits than its factorization.

82870407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9207829 (or 9207826 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 82870407 is about 9103.3184608691. The cubic root of 82870407 is about 435.9799232542.

It can be divided in two parts, 82 and 870407, that added together give a square (870489 = 933²).

The spelling of 82870407 in words is "eighty-two million, eight hundred seventy thousand, four hundred seven".