77630047 has 8 divisors (see below), whose sum is σ = 84799440. Its totient is φ = 70479360.

The previous prime is 77630039. The next prime is 77630053. The reversal of 77630047 is 74003677.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 77630047 - 2³ = 77630039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77629994 and 77630021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77630087) 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, 4863 + ... + 13375.

It is an arithmetic number, because the mean of its divisors is an integer number (10599930).

Almost surely, 2^77630047 is an apocalyptic number.

77630047 is a deficient number, since it is larger than the sum of its proper divisors (7169393).

77630047 is a wasteful number, since it uses less digits than its factorization.

77630047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9353.

The product of its (nonzero) digits is 24696, while the sum is 34.

The square root of 77630047 is about 8810.7915081450. The cubic root of 77630047 is about 426.5892918638.

The spelling of 77630047 in words is "seventy-seven million, six hundred thirty thousand, forty-seven".