7761649004 has 12 divisors (see below), whose sum is σ = 13584021528. Its totient is φ = 3880500000.

The previous prime is 7761649003. The next prime is 7761649009. The reversal of 7761649004 is 4009461677.

It is a super-2 number, since 2×7761649004² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7761649003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22622 + ... + 126629.

It is an arithmetic number, because the mean of its divisors is an integer number (1132001794).

Almost surely, 2^7761649004 is an apocalyptic number.

It is an amenable number.

7761649004 is a deficient number, since it is larger than the sum of its proper divisors (5822372524).

7761649004 is a wasteful number, since it uses less digits than its factorization.

7761649004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162256 (or 162254 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 7761649004 is about 88100.2213618104. The cubic root of 7761649004 is about 1979.9368244986.

The spelling of 7761649004 in words is "seven billion, seven hundred sixty-one million, six hundred forty-nine thousand, four".