78342633 has 20 divisors (see below), whose sum is σ = 117465348. Its totient is φ = 52034400.

The previous prime is 78342581. The next prime is 78342637. The reversal of 78342633 is 33624387.

It can be written as a sum of positive squares in 2 ways, for example, as 48399849 + 29942784 = 6957^2 + 5472^2 .

It is not a de Polignac number, because 78342633 - 2¹⁰ = 78341609 is a prime.

It is a super-2 number, since 2×78342633² = 12275136290745378, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78342637) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22083 + ... + 25383.

Almost surely, 2^78342633 is an apocalyptic number.

It is an amenable number.

78342633 is a deficient number, since it is larger than the sum of its proper divisors (39122715).

78342633 is a wasteful number, since it uses less digits than its factorization.

78342633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3606 (or 3597 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 78342633 is about 8851.1373845399. The cubic root of 78342633 is about 427.8905756454.

The spelling of 78342633 in words is "seventy-eight million, three hundred forty-two thousand, six hundred thirty-three".