782106427 has 4 divisors (see below), whose sum is σ = 791529480. Its totient is φ = 772683376.

The previous prime is 782106389. The next prime is 782106431. The reversal of 782106427 is 724601287.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 782106427 - 2¹⁵ = 782073659 is a prime.

It is a super-2 number, since 2×782106427² = 1223380926309412658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (782106487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4711402 + ... + 4711567.

It is an arithmetic number, because the mean of its divisors is an integer number (197882370).

Almost surely, 2^782106427 is an apocalyptic number.

782106427 is a deficient number, since it is larger than the sum of its proper divisors (9423053).

782106427 is an equidigital number, since it uses as much as digits as its factorization.

782106427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9423052.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 782106427 is about 27966.1657543540. The cubic root of 782106427 is about 921.3442961900.

The spelling of 782106427 in words is "seven hundred eighty-two million, one hundred six thousand, four hundred twenty-seven".