78286707 has 12 divisors (see below), whose sum is σ = 119032680. Its totient is φ = 49444128.

The previous prime is 78286693. The next prime is 78286721. The reversal of 78286707 is 70768287.

It is an interprime number because it is at equal distance from previous prime (78286693) and next prime (78286721).

It is not a de Polignac number, because 78286707 - 2⁶ = 78286643 is a prime.

It is a super-2 number, since 2×78286707² = 12257616985807698, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (78286727) 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, 228738 + ... + 229079.

It is an arithmetic number, because the mean of its divisors is an integer number (9919390).

Almost surely, 2^78286707 is an apocalyptic number.

78286707 is a deficient number, since it is larger than the sum of its proper divisors (40745973).

78286707 is a wasteful number, since it uses less digits than its factorization.

78286707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457842 (or 457839 counting only the distinct ones).

The product of its (nonzero) digits is 263424, while the sum is 45.

The square root of 78286707 is about 8847.9775655231. The cubic root of 78286707 is about 427.7887328217.

It can be divided in two parts, 7828 and 6707, that added together give a triangular number (14535 = T₁₇₀).

The spelling of 78286707 in words is "seventy-eight million, two hundred eighty-six thousand, seven hundred seven".