77830071 has 8 divisors (see below), whose sum is σ = 113207424. Its totient is φ = 47169720.

The previous prime is 77830069. The next prime is 77830079. The reversal of 77830071 is 17003877.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 77830071 - 2¹ = 77830069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 2358487 = 77830071 / (7 + 7 + 8 + 3 + 0 + 0 + 7 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77830079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1179211 + ... + 1179276.

It is an arithmetic number, because the mean of its divisors is an integer number (14150928).

Almost surely, 2^77830071 is an apocalyptic number.

77830071 is a deficient number, since it is larger than the sum of its proper divisors (35377353).

77830071 is a wasteful number, since it uses less digits than its factorization.

77830071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2358501.

The product of its (nonzero) digits is 8232, while the sum is 33.

The square root of 77830071 is about 8822.1352857457. The cubic root of 77830071 is about 426.9553653890.

The spelling of 77830071 in words is "seventy-seven million, eight hundred thirty thousand, seventy-one".