7490187664 has 40 divisors (see below), whose sum is σ = 14880031992. Its totient is φ = 3650350080.

The previous prime is 7490187631. The next prime is 7490187689. The reversal of 7490187664 is 4667810947.

It can be written as a sum of positive squares in 4 ways, for example, as 271986064 + 7218201600 = 16492^2 + 84960^2 .

It is a super-2 number, since 2×7490187664² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 791022 + ... + 800434.

Almost surely, 2^7490187664 is an apocalyptic number.

It is an amenable number.

7490187664 is a deficient number, since it is larger than the sum of its proper divisors (7389844328).

7490187664 is a wasteful number, since it uses less digits than its factorization.

7490187664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10675 (or 10669 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 52.

The square root of 7490187664 is about 86545.8702885354. The cubic root of 7490187664 is about 1956.5798036651.

The spelling of 7490187664 in words is "seven billion, four hundred ninety million, one hundred eighty-seven thousand, six hundred sixty-four".