61411715 has 4 divisors (see below), whose sum is σ = 73694064. Its totient is φ = 49129368.

The previous prime is 61411703. The next prime is 61411723. The reversal of 61411715 is 51711416.

It is a happy number.

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 61411715 - 2⁴ = 61411699 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6141167 + ... + 6141176.

It is an arithmetic number, because the mean of its divisors is an integer number (18423516).

Almost surely, 2^61411715 is an apocalyptic number.

61411715 is a deficient number, since it is larger than the sum of its proper divisors (12282349).

61411715 is a wasteful number, since it uses less digits than its factorization.

61411715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12282348.

The product of its digits is 840, while the sum is 26.

The square root of 61411715 is about 7836.5627031244. The cubic root of 61411715 is about 394.5333698131.

It can be divided in two parts, 61411 and 715, that added together give a palindrome (62126).

The spelling of 61411715 in words is "sixty-one million, four hundred eleven thousand, seven hundred fifteen".