840630077 has 4 divisors (see below), whose sum is σ = 960720096. Its totient is φ = 720540060.

The previous prime is 840630067. The next prime is 840630079. The reversal of 840630077 is 770036048.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-840630077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840630079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60044999 + ... + 60045012.

It is an arithmetic number, because the mean of its divisors is an integer number (240180024).

Almost surely, 2^840630077 is an apocalyptic number.

It is an amenable number.

840630077 is a deficient number, since it is larger than the sum of its proper divisors (120090019).

840630077 is a wasteful number, since it uses less digits than its factorization.

840630077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120090018.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 840630077 is about 28993.6213157308. The cubic root of 840630077 is about 943.7746506317.

It can be divided in two parts, 8406 and 30077, that added together give a palindrome (38483).

The spelling of 840630077 in words is "eight hundred forty million, six hundred thirty thousand, seventy-seven".