77145464 has 16 divisors (see below), whose sum is σ = 157797720. Its totient is φ = 35066080.

The previous prime is 77145463. The next prime is 77145469. The reversal of 77145464 is 46454177.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77145463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 438239 + ... + 438414.

Almost surely, 2^77145464 is an apocalyptic number.

It is an amenable number.

77145464 is an abundant number, since it is smaller than the sum of its proper divisors (80652256).

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

77145464 is a wasteful number, since it uses less digits than its factorization.

77145464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876670 (or 876666 counting only the distinct ones).

The product of its digits is 94080, while the sum is 38.

The square root of 77145464 is about 8783.2490571542. The cubic root of 77145464 is about 425.6998186499.

It can be divided in two parts, 77 and 145464, that added together give a palindrome (145541).

The spelling of 77145464 in words is "seventy-seven million, one hundred forty-five thousand, four hundred sixty-four".