86820802 has 12 divisors (see below), whose sum is σ = 138343410. Its totient is φ = 40856576.

The previous prime is 86820787. The next prime is 86820817. The reversal of 86820802 is 20802868.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (86820787) and next prime (86820817).

It can be written as a sum of positive squares in 3 ways, for example, as 85359121 + 1461681 = 9239^2 + 1209^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 74527 + ... + 75682.

Almost surely, 2^86820802 is an apocalyptic number.

86820802 is a deficient number, since it is larger than the sum of its proper divisors (51522608).

86820802 is a wasteful number, since it uses less digits than its factorization.

86820802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150245 (or 150228 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 86820802 is about 9317.7680803935. The cubic root of 86820802 is about 442.8003251323.

The spelling of 86820802 in words is "eighty-six million, eight hundred twenty thousand, eight hundred two".