77242633 has 6 divisors (see below), whose sum is σ = 83641614. Its totient is φ = 71300736.

The previous prime is 77242609. The next prime is 77242637. The reversal of 77242633 is 33624277.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 10705984 + 66536649 = 3272^2 + 8157^2 .

It is not a de Polignac number, because 77242633 - 2⁵ = 77242601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77242637) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 228360 + ... + 228697.

It is an arithmetic number, because the mean of its divisors is an integer number (13940269).

Almost surely, 2^77242633 is an apocalyptic number.

It is an amenable number.

77242633 is a deficient number, since it is larger than the sum of its proper divisors (6398981).

77242633 is a wasteful number, since it uses less digits than its factorization.

77242633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457083 (or 457070 counting only the distinct ones).

The product of its digits is 42336, while the sum is 34.

The square root of 77242633 is about 8788.7788116439. The cubic root of 77242633 is about 425.8784745232.

The spelling of 77242633 in words is "seventy-seven million, two hundred forty-two thousand, six hundred thirty-three".