77734971 has 12 divisors (see below), whose sum is σ = 116442872. Its totient is φ = 51823152.

The previous prime is 77734967. The next prime is 77734991. The reversal of 77734971 is 17943777.

It is not a de Polignac number, because 77734971 - 2² = 77734967 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77734961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 159706 + ... + 160191.

Almost surely, 2^77734971 is an apocalyptic number.

77734971 is a deficient number, since it is larger than the sum of its proper divisors (38707901).

77734971 is an equidigital number, since it uses as much as digits as its factorization.

77734971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319912 (or 319900 counting only the distinct ones).

The product of its digits is 259308, while the sum is 45.

The square root of 77734971 is about 8816.7437866822. The cubic root of 77734971 is about 426.7813966232.

The spelling of 77734971 in words is "seventy-seven million, seven hundred thirty-four thousand, nine hundred seventy-one".