7740491065 has 16 divisors (see below), whose sum is σ = 9843256080. Its totient is φ = 5833031680.

The previous prime is 7740491063. The next prime is 7740491137. The reversal of 7740491065 is 5601940477.

It can be written as a sum of positive squares in 8 ways, for example, as 2077627561 + 5662863504 = 45581^2 + 75252^2 .

It is not a de Polignac number, because 7740491065 - 2¹ = 7740491063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7740491063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 645064 + ... + 656953.

It is an arithmetic number, because the mean of its divisors is an integer number (615203505).

Almost surely, 2^7740491065 is an apocalyptic number.

It is an amenable number.

7740491065 is a deficient number, since it is larger than the sum of its proper divisors (2102765015).

7740491065 is a wasteful number, since it uses less digits than its factorization.

7740491065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302092.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 7740491065 is about 87980.0606103451. The cubic root of 7740491065 is about 1978.1361115736.

The spelling of 7740491065 in words is "seven billion, seven hundred forty million, four hundred ninety-one thousand, sixty-five".