7240471787 has 4 divisors (see below), whose sum is σ = 7295742696. Its totient is φ = 7185200880.

The previous prime is 7240471769. The next prime is 7240471813. The reversal of 7240471787 is 7871740427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7871740427 = 1871 ⋅4207237.

It is a cyclic number.

It is not a de Polignac number, because 7240471787 - 2¹² = 7240467691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7240471727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27635258 + ... + 27635519.

It is an arithmetic number, because the mean of its divisors is an integer number (1823935674).

Almost surely, 2^7240471787 is an apocalyptic number.

7240471787 is a deficient number, since it is larger than the sum of its proper divisors (55270909).

7240471787 is a wasteful number, since it uses less digits than its factorization.

7240471787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55270908.

The product of its (nonzero) digits is 614656, while the sum is 47.

The square root of 7240471787 is about 85090.9618408442. The cubic root of 7240471787 is about 1934.5900741899.

The spelling of 7240471787 in words is "seven billion, two hundred forty million, four hundred seventy-one thousand, seven hundred eighty-seven".