77121463 has 4 divisors (see below), whose sum is σ = 77147208. Its totient is φ = 77095720.

The previous prime is 77121433. The next prime is 77121467. The reversal of 77121463 is 36412177.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 77121463 - 2⁹ = 77120951 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77121467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7681 + ... + 14602.

It is an arithmetic number, because the mean of its divisors is an integer number (19286802).

Almost surely, 2^77121463 is an apocalyptic number.

77121463 is a deficient number, since it is larger than the sum of its proper divisors (25745).

77121463 is a wasteful number, since it uses less digits than its factorization.

77121463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25744.

The product of its digits is 7056, while the sum is 31.

The square root of 77121463 is about 8781.8826569250. The cubic root of 77121463 is about 425.6556670754.

The spelling of 77121463 in words is "seventy-seven million, one hundred twenty-one thousand, four hundred sixty-three".