77905346 has 4 divisors (see below), whose sum is σ = 116858022. Its totient is φ = 38952672.

The previous prime is 77905337. The next prime is 77905351. The reversal of 77905346 is 64350977.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64350977 = 107 ⋅601411.

It can be written as a sum of positive squares in only one way, i.e., 63760225 + 14145121 = 7985^2 + 3761^2 .

It is a Curzon number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 19476335 + ... + 19476338.

Almost surely, 2^77905346 is an apocalyptic number.

77905346 is a deficient number, since it is larger than the sum of its proper divisors (38952676).

77905346 is a wasteful number, since it uses less digits than its factorization.

77905346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38952675.

The product of its (nonzero) digits is 158760, while the sum is 41.

The square root of 77905346 is about 8826.4005121000. The cubic root of 77905346 is about 427.0929673422.

The spelling of 77905346 in words is "seventy-seven million, nine hundred five thousand, three hundred forty-six".