77934345 has 16 divisors (see below), whose sum is σ = 124861632. Its totient is φ = 41509440.

The previous prime is 77934343. The next prime is 77934347. The reversal of 77934345 is 54343977.

It is an interprime number because it is at equal distance from previous prime (77934343) and next prime (77934347).

It is not a de Polignac number, because 77934345 - 2¹ = 77934343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77934297 and 77934306.

It is not an unprimeable number, because it can be changed into a prime (77934343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9750 + ... + 15840.

It is an arithmetic number, because the mean of its divisors is an integer number (7803852).

Almost surely, 2^77934345 is an apocalyptic number.

It is an amenable number.

77934345 is a deficient number, since it is larger than the sum of its proper divisors (46927287).

77934345 is a wasteful number, since it uses less digits than its factorization.

77934345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6952.

The product of its digits is 317520, while the sum is 42.

The square root of 77934345 is about 8828.0431013900. The cubic root of 77934345 is about 427.1459535756.

The spelling of 77934345 in words is "seventy-seven million, nine hundred thirty-four thousand, three hundred forty-five".