7661072 has 20 divisors (see below), whose sum is σ = 15245676. Its totient is φ = 3726720.

The previous prime is 7661057. The next prime is 7661077. The reversal of 7661072 is 2701667.

It can be written as a sum of positive squares in 2 ways, for example, as 6370576 + 1290496 = 2524^2 + 1136^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (7661077) 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, 5879 + ... + 7062.

Almost surely, 2^7661072 is an apocalyptic number.

It is an amenable number.

7661072 is a deficient number, since it is larger than the sum of its proper divisors (7584604).

7661072 is a wasteful number, since it uses less digits than its factorization.

7661072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12986 (or 12980 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 7661072 is about 2767.8641585165. The cubic root of 7661072 is about 197.1347476685.

The spelling of 7661072 in words is "seven million, six hundred sixty-one thousand, seventy-two".