77338461 has 4 divisors (see below), whose sum is σ = 103117952. Its totient is φ = 51558972.

The previous prime is 77338433. The next prime is 77338517. The reversal of 77338461 is 16483377.

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: 16483377 = 3 ⋅5494459.

It is not a de Polignac number, because 77338461 - 2¹⁵ = 77305693 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 (77338061) 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, 12889741 + ... + 12889746.

It is an arithmetic number, because the mean of its divisors is an integer number (25779488).

Almost surely, 2^77338461 is an apocalyptic number.

It is an amenable number.

77338461 is a deficient number, since it is larger than the sum of its proper divisors (25779491).

77338461 is a wasteful number, since it uses less digits than its factorization.

77338461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25779490.

The product of its digits is 84672, while the sum is 39.

The square root of 77338461 is about 8794.2288462377. The cubic root of 77338461 is about 426.0545181389.

The spelling of 77338461 in words is "seventy-seven million, three hundred thirty-eight thousand, four hundred sixty-one".