77334644 has 6 divisors (see below), whose sum is σ = 135335634. Its totient is φ = 38667320.

The previous prime is 77334637. The next prime is 77334659. The reversal of 77334644 is 44643377.

It can be written as a sum of positive squares in only one way, i.e., 61811044 + 15523600 = 7862^2 + 3940^2 .

It is a junction number, because it is equal to n+sod(n) for n = 77334598 and 77334607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9666827 + ... + 9666834.

It is an arithmetic number, because the mean of its divisors is an integer number (22555939).

Almost surely, 2^77334644 is an apocalyptic number.

It is an amenable number.

77334644 is a deficient number, since it is larger than the sum of its proper divisors (58000990).

77334644 is a wasteful number, since it uses less digits than its factorization.

77334644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19333665 (or 19333663 counting only the distinct ones).

The product of its digits is 169344, while the sum is 38.

The square root of 77334644 is about 8794.0118262372. The cubic root of 77334644 is about 426.0475087897.

The spelling of 77334644 in words is "seventy-seven million, three hundred thirty-four thousand, six hundred forty-four".