77463797 has 4 divisors (see below), whose sum is σ = 77831136. Its totient is φ = 77096460.

The previous prime is 77463767. The next prime is 77463809. The reversal of 77463797 is 79736477.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79736477 = 17 ⋅4690381.

It is a cyclic number.

It is not a de Polignac number, because 77463797 - 2⁸ = 77463541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77463707) 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, 183353 + ... + 183774.

It is an arithmetic number, because the mean of its divisors is an integer number (19457784).

Almost surely, 2^77463797 is an apocalyptic number.

It is an amenable number.

77463797 is a deficient number, since it is larger than the sum of its proper divisors (367339).

77463797 is a wasteful number, since it uses less digits than its factorization.

77463797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367338.

The product of its digits is 1555848, while the sum is 50.

The square root of 77463797 is about 8801.3519984148. The cubic root of 77463797 is about 426.2845509384.

The spelling of 77463797 in words is "seventy-seven million, four hundred sixty-three thousand, seven hundred ninety-seven".