77427633 has 8 divisors (see below), whose sum is σ = 103343200. Its totient is φ = 51565248.

The previous prime is 77427619. The next prime is 77427653. The reversal of 77427633 is 33672477.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 77427633 - 2²¹ = 75330481 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77427591 and 77427600.

It is not an unprimeable number, because it can be changed into a prime (77427653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9763 + ... + 15816.

It is an arithmetic number, because the mean of its divisors is an integer number (12917900).

Almost surely, 2^77427633 is an apocalyptic number.

It is an amenable number.

77427633 is a deficient number, since it is larger than the sum of its proper divisors (25915567).

77427633 is a wasteful number, since it uses less digits than its factorization.

77427633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26591.

The product of its digits is 148176, while the sum is 39.

The square root of 77427633 is about 8799.2973014895. The cubic root of 77427633 is about 426.2182035833.

The spelling of 77427633 in words is "seventy-seven million, four hundred twenty-seven thousand, six hundred thirty-three".