77430533 has 8 divisors (see below), whose sum is σ = 79145976. Its totient is φ = 75729600.

The previous prime is 77430527. The next prime is 77430547. The reversal of 77430533 is 33503477.

It can be written as a sum of positive squares in 4 ways, for example, as 289444 + 77141089 = 538^2 + 8783^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 77430533 - 2⁴ = 77430517 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77430533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77430553) 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, 7535 + ... + 14547.

It is an arithmetic number, because the mean of its divisors is an integer number (9893247).

Almost surely, 2^77430533 is an apocalyptic number.

It is an amenable number.

77430533 is a deficient number, since it is larger than the sum of its proper divisors (1715443).

77430533 is a wasteful number, since it uses less digits than its factorization.

77430533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7255.

The product of its (nonzero) digits is 26460, while the sum is 32.

The square root of 77430533 is about 8799.4620858323. The cubic root of 77430533 is about 426.2235247557.

The spelling of 77430533 in words is "seventy-seven million, four hundred thirty thousand, five hundred thirty-three".