61273993 has 8 divisors (see below), whose sum is σ = 70362720. Its totient is φ = 52771680.

The previous prime is 61273991. The next prime is 61273999. The reversal of 61273993 is 39937216.

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

It is a cyclic number.

It is not a de Polignac number, because 61273993 - 2¹ = 61273991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61273991) 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, 146380 + ... + 146797.

It is an arithmetic number, because the mean of its divisors is an integer number (8795340).

Almost surely, 2^61273993 is an apocalyptic number.

It is an amenable number.

61273993 is a deficient number, since it is larger than the sum of its proper divisors (9088727).

61273993 is a wasteful number, since it uses less digits than its factorization.

61273993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293207.

The product of its digits is 61236, while the sum is 40.

The square root of 61273993 is about 7827.7706277075. The cubic root of 61273993 is about 394.2382220367.

The spelling of 61273993 in words is "sixty-one million, two hundred seventy-three thousand, nine hundred ninety-three".