61916973 has 8 divisors (see below), whose sum is σ = 82605600. Its totient is φ = 41253168.

The previous prime is 61916971. The next prime is 61916983. The reversal of 61916973 is 37961916.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61916973 - 2¹ = 61916971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61916971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 723 + ... + 11151.

It is an arithmetic number, because the mean of its divisors is an integer number (10325700).

Almost surely, 2^61916973 is an apocalyptic number.

It is an amenable number.

61916973 is a deficient number, since it is larger than the sum of its proper divisors (20688627).

61916973 is a wasteful number, since it uses less digits than its factorization.

61916973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12411.

The product of its digits is 61236, while the sum is 42.

The square root of 61916973 is about 7868.7338879899. The cubic root of 61916973 is about 395.6124089991.

The spelling of 61916973 in words is "sixty-one million, nine hundred sixteen thousand, nine hundred seventy-three".