68781807 has 12 divisors (see below), whose sum is σ = 99510840. Its totient is φ = 45781008.

The previous prime is 68781793. The next prime is 68781871. The reversal of 68781807 is 70818786.

It is not a de Polignac number, because 68781807 - 2²⁴ = 52004591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68781607) 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, 133 + ... + 11729.

It is an arithmetic number, because the mean of its divisors is an integer number (8292570).

Almost surely, 2^68781807 is an apocalyptic number.

68781807 is a deficient number, since it is larger than the sum of its proper divisors (30729033).

68781807 is a wasteful number, since it uses less digits than its factorization.

68781807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12262 (or 12259 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 45.

The square root of 68781807 is about 8293.4797883639. The cubic root of 68781807 is about 409.7238016853.

It can be divided in two parts, 68 and 781807, that added together give a triangular number (781875 = T₁₂₅₀).

The spelling of 68781807 in words is "sixty-eight million, seven hundred eighty-one thousand, eight hundred seven".