61461719 has 4 divisors (see below), whose sum is σ = 67049160. Its totient is φ = 55874280.

The previous prime is 61461689. The next prime is 61461737. The reversal of 61461719 is 91716416.

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

It is a de Polignac number, because none of the positive numbers 2^k-61461719 is a prime.

It is a super-2 number, since 2×61461719² = 7555085804869922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61461739) 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, 2793704 + ... + 2793725.

It is an arithmetic number, because the mean of its divisors is an integer number (16762290).

Almost surely, 2^61461719 is an apocalyptic number.

61461719 is a deficient number, since it is larger than the sum of its proper divisors (5587441).

61461719 is a wasteful number, since it uses less digits than its factorization.

61461719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5587440.

The product of its digits is 9072, while the sum is 35.

The square root of 61461719 is about 7839.7524833377. The cubic root of 61461719 is about 394.6404226478.

The spelling of 61461719 in words is "sixty-one million, four hundred sixty-one thousand, seven hundred nineteen".