72951763 has 4 divisors (see below), whose sum is σ = 73235880. Its totient is φ = 72667648.

The previous prime is 72951757. The next prime is 72951793. The reversal of 72951763 is 36715927.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36715927 = 5827 ⋅6301.

It is a cyclic number.

It is not a de Polignac number, because 72951763 - 2⁹ = 72951251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72951793) 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, 141673 + ... + 142186.

It is an arithmetic number, because the mean of its divisors is an integer number (18308970).

Almost surely, 2^72951763 is an apocalyptic number.

72951763 is a deficient number, since it is larger than the sum of its proper divisors (284117).

72951763 is a wasteful number, since it uses less digits than its factorization.

72951763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284116.

The product of its digits is 79380, while the sum is 40.

The square root of 72951763 is about 8541.1804219323. The cubic root of 72951763 is about 417.8418451151.

The spelling of 72951763 in words is "seventy-two million, nine hundred fifty-one thousand, seven hundred sixty-three".