61323671 has 4 divisors (see below), whose sum is σ = 62100000. Its totient is φ = 60547344.

The previous prime is 61323653. The next prime is 61323677. The reversal of 61323671 is 17632316.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61323671 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 (61323677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388046 + ... + 388203.

It is an arithmetic number, because the mean of its divisors is an integer number (15525000).

Almost surely, 2^61323671 is an apocalyptic number.

61323671 is a deficient number, since it is larger than the sum of its proper divisors (776329).

61323671 is an equidigital number, since it uses as much as digits as its factorization.

61323671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776328.

The product of its digits is 4536, while the sum is 29.

The square root of 61323671 is about 7830.9431743565. The cubic root of 61323671 is about 394.3447363722.

Adding to 61323671 its reverse (17632316), we get a palindrome (78955987).

The spelling of 61323671 in words is "sixty-one million, three hundred twenty-three thousand, six hundred seventy-one".