61768471 has 4 divisors (see below), whose sum is σ = 61859592. Its totient is φ = 61677352.

The previous prime is 61768459. The next prime is 61768477. The reversal of 61768471 is 17486716.

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 61768471 - 2²¹ = 59671319 is a prime.

It is a super-3 number, since 3×61768471³ (a number of 24 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (40) 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 (61768477) 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, 44536 + ... + 45901.

It is an arithmetic number, because the mean of its divisors is an integer number (15464898).

Almost surely, 2^61768471 is an apocalyptic number.

61768471 is a deficient number, since it is larger than the sum of its proper divisors (91121).

61768471 is an equidigital number, since it uses as much as digits as its factorization.

61768471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91120.

The product of its digits is 56448, while the sum is 40.

The square root of 61768471 is about 7859.2920164605. The cubic root of 61768471 is about 395.2958761651.

The spelling of 61768471 in words is "sixty-one million, seven hundred sixty-eight thousand, four hundred seventy-one".