77948265 has 32 divisors (see below), whose sum is σ = 131486976. Its totient is φ = 39353600.

The previous prime is 77948249. The next prime is 77948267. The reversal of 77948265 is 56284977.

It is not a de Polignac number, because 77948265 - 2⁴ = 77948249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77948267) by changing a digit.

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 in 31 ways as a sum of consecutive naturals, for example, 33727 + ... + 35963.

It is an arithmetic number, because the mean of its divisors is an integer number (4108968).

Almost surely, 2^77948265 is an apocalyptic number.

It is an amenable number.

77948265 is a deficient number, since it is larger than the sum of its proper divisors (53538711).

77948265 is a wasteful number, since it uses less digits than its factorization.

77948265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2369.

The product of its digits is 846720, while the sum is 48.

The square root of 77948265 is about 8828.8314628834. The cubic root of 77948265 is about 427.1713831758.

The spelling of 77948265 in words is "seventy-seven million, nine hundred forty-eight thousand, two hundred sixty-five".