77473965 has 32 divisors (see below), whose sum is σ = 126884736. Its totient is φ = 40354560.

The previous prime is 77473961. The next prime is 77473987. The reversal of 77473965 is 56937477.

It is not a de Polignac number, because 77473965 - 2² = 77473961 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77473961) 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, 207519 + ... + 207891.

It is an arithmetic number, because the mean of its divisors is an integer number (3965148).

Almost surely, 2^77473965 is an apocalyptic number.

It is an amenable number.

77473965 is a deficient number, since it is larger than the sum of its proper divisors (49410771).

77473965 is a wasteful number, since it uses less digits than its factorization.

77473965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669.

The product of its digits is 1111320, while the sum is 48.

The square root of 77473965 is about 8801.9296179872. The cubic root of 77473965 is about 426.3032016795.

The spelling of 77473965 in words is "seventy-seven million, four hundred seventy-three thousand, nine hundred sixty-five".