78762461 has 4 divisors (see below), whose sum is σ = 78858300. Its totient is φ = 78666624.

The previous prime is 78762433. The next prime is 78762473. The reversal of 78762461 is 16426787.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16426787 = 13 ⋅1263599.

It can be written as a sum of positive squares in 2 ways, for example, as 34739236 + 44023225 = 5894^2 + 6635^2 .

It is a cyclic number.

It is not a de Polignac number, because 78762461 - 2¹⁴ = 78746077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78762421) 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, 46676 + ... + 48333.

It is an arithmetic number, because the mean of its divisors is an integer number (19714575).

Almost surely, 2^78762461 is an apocalyptic number.

It is an amenable number.

78762461 is a deficient number, since it is larger than the sum of its proper divisors (95839).

78762461 is an equidigital number, since it uses as much as digits as its factorization.

78762461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95838.

The product of its digits is 112896, while the sum is 41.

The square root of 78762461 is about 8874.8217446887. The cubic root of 78762461 is about 428.6535510511.

The spelling of 78762461 in words is "seventy-eight million, seven hundred sixty-two thousand, four hundred sixty-one".