77623241 has 8 divisors (see below), whose sum is σ = 82791720. Its totient is φ = 72521728.

The previous prime is 77623237. The next prime is 77623261. The reversal of 77623241 is 14232677.

It can be written as a sum of positive squares in 4 ways, for example, as 31315216 + 46308025 = 5596^2 + 6805^2 .

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

It is not a de Polignac number, because 77623241 - 2² = 77623237 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77623198 and 77623207.

It is not an unprimeable number, because it can be changed into a prime (77623201) 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 7 ways as a sum of consecutive naturals, for example, 14336 + ... + 18993.

It is an arithmetic number, because the mean of its divisors is an integer number (10348965).

Almost surely, 2^77623241 is an apocalyptic number.

It is an amenable number.

77623241 is a deficient number, since it is larger than the sum of its proper divisors (5168479).

77623241 is a wasteful number, since it uses less digits than its factorization.

77623241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33483.

The product of its digits is 14112, while the sum is 32.

The square root of 77623241 is about 8810.4052687717. The cubic root of 77623241 is about 426.5768248201.

The spelling of 77623241 in words is "seventy-seven million, six hundred twenty-three thousand, two hundred forty-one".