77645348 has 12 divisors (see below), whose sum is σ = 148232112. Its totient is φ = 35293320.

The previous prime is 77645333. The next prime is 77645353. The reversal of 77645348 is 84354677.

It is a super-2 number, since 2×77645348² = 12057600132082208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 1764667 = 77645348 / (7 + 7 + 6 + 4 + 5 + 3 + 4 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 77645299 and 77645308.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 882290 + ... + 882377.

It is an arithmetic number, because the mean of its divisors is an integer number (12352676).

Almost surely, 2^77645348 is an apocalyptic number.

It is an amenable number.

77645348 is a deficient number, since it is larger than the sum of its proper divisors (70586764).

77645348 is a wasteful number, since it uses less digits than its factorization.

77645348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1764682 (or 1764680 counting only the distinct ones).

The product of its digits is 564480, while the sum is 44.

The square root of 77645348 is about 8811.6597755474. The cubic root of 77645348 is about 426.6173171547.

The spelling of 77645348 in words is "seventy-seven million, six hundred forty-five thousand, three hundred forty-eight".