7245897666 has 16 divisors (see below), whose sum is σ = 16562051904. Its totient is φ = 2070256464.

The previous prime is 7245897653. The next prime is 7245897683. The reversal of 7245897666 is 6667985427.

It is a super-2 number, since 2×7245897666² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86260645 + ... + 86260728.

It is an arithmetic number, because the mean of its divisors is an integer number (1035128244).

Almost surely, 2^7245897666 is an apocalyptic number.

7245897666 is an abundant number, since it is smaller than the sum of its proper divisors (9316154238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7245897666 is a wasteful number, since it uses less digits than its factorization.

7245897666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172521385.

The product of its digits is 30481920, while the sum is 60.

The square root of 7245897666 is about 85122.8386862186. The cubic root of 7245897666 is about 1935.0732025001.

The spelling of 7245897666 in words is "seven billion, two hundred forty-five million, eight hundred ninety-seven thousand, six hundred sixty-six".