77894514 has 64 divisors (see below), whose sum is σ = 183859200. Its totient is φ = 24392016.

The previous prime is 77894513. The next prime is 77894519. The reversal of 77894514 is 41549877.

It is a happy number.

It is a super-2 number, since 2×77894514² = 12135110622592392, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 77894514.

It is not an unprimeable number, because it can be changed into a prime (77894513) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72747 + ... + 73809.

It is an arithmetic number, because the mean of its divisors is an integer number (2872800).

Almost surely, 2^77894514 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77894514, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91929600).

77894514 is an abundant number, since it is smaller than the sum of its proper divisors (105964686).

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

77894514 is a wasteful number, since it uses less digits than its factorization.

77894514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156 (or 1150 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 77894514 is about 8825.7868771005. The cubic root of 77894514 is about 427.0731720150.

The spelling of 77894514 in words is "seventy-seven million, eight hundred ninety-four thousand, five hundred fourteen".