61974993 has 8 divisors (see below), whose sum is σ = 82778848. Its totient is φ = 41243904.

The previous prime is 61974973. The next prime is 61975003. The reversal of 61974993 is 39947916.

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

It is not a de Polignac number, because 61974993 - 2⁵ = 61974961 is a prime.

It is a Duffinian number.

It is a zygodrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (61974953) 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, 16171 + ... + 19632.

It is an arithmetic number, because the mean of its divisors is an integer number (10347356).

Almost surely, 2^61974993 is an apocalyptic number.

It is an amenable number.

61974993 is a deficient number, since it is larger than the sum of its proper divisors (20803855).

61974993 is a wasteful number, since it uses less digits than its factorization.

61974993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36383.

The product of its digits is 367416, while the sum is 48.

The square root of 61974993 is about 7872.4197677715. The cubic root of 61974993 is about 395.7359414491.

The spelling of 61974993 in words is "sixty-one million, nine hundred seventy-four thousand, nine hundred ninety-three".