7249723561 has 8 divisors (see below), whose sum is σ = 7475509440. Its totient is φ = 7027234032.

The previous prime is 7249723529. The next prime is 7249723567. The reversal of 7249723561 is 1653279427.

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 7249723561 - 2⁵ = 7249723529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7249723567) 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, 819621 + ... + 828418.

It is an arithmetic number, because the mean of its divisors is an integer number (934438680).

Almost surely, 2^7249723561 is an apocalyptic number.

It is an amenable number.

7249723561 is a deficient number, since it is larger than the sum of its proper divisors (225785879).

7249723561 is a wasteful number, since it uses less digits than its factorization.

7249723561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1648175.

The product of its digits is 635040, while the sum is 46.

The square root of 7249723561 is about 85145.3085084551. The cubic root of 7249723561 is about 1935.4137208916.

The spelling of 7249723561 in words is "seven billion, two hundred forty-nine million, seven hundred twenty-three thousand, five hundred sixty-one".