77948607 has 32 divisors (see below), whose sum is σ = 119854080. Its totient is φ = 44616320.

The previous prime is 77948599. The next prime is 77948609. The reversal of 77948607 is 70684977.

It is a cyclic number.

It is not a de Polignac number, because 77948607 - 2³ = 77948599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77948609) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44113 + ... + 45845.

It is an arithmetic number, because the mean of its divisors is an integer number (3745440).

Almost surely, 2^77948607 is an apocalyptic number.

77948607 is a deficient number, since it is larger than the sum of its proper divisors (41905473).

77948607 is a wasteful number, since it uses less digits than its factorization.

77948607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1823.

The product of its (nonzero) digits is 592704, while the sum is 48.

The square root of 77948607 is about 8828.8508312237. The cubic root of 77948607 is about 427.1720079167.

The spelling of 77948607 in words is "seventy-seven million, nine hundred forty-eight thousand, six hundred seven".