77471316 has 72 divisors (see below), whose sum is σ = 218740704. Its totient is φ = 23833440.

The previous prime is 77471311. The next prime is 77471321. The reversal of 77471316 is 61317477.

It is an interprime number because it is at equal distance from previous prime (77471311) and next prime (77471321).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77471311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9571 + ... + 15701.

Almost surely, 2^77471316 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77471316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109370352).

77471316 is an abundant number, since it is smaller than the sum of its proper divisors (141269388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77471316 is a wasteful number, since it uses less digits than its factorization.

77471316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6163 (or 6149 counting only the distinct ones).

The product of its digits is 24696, while the sum is 36.

The square root of 77471316 is about 8801.7791383333. The cubic root of 77471316 is about 426.2983428858.

The spelling of 77471316 in words is "seventy-seven million, four hundred seventy-one thousand, three hundred sixteen".