7661601 has 8 divisors (see below), whose sum is σ = 11350560. Its totient is φ = 5107716.

The previous prime is 7661581. The next prime is 7661603. The reversal of 7661601 is 1061667.

It is not a de Polignac number, because 7661601 - 2⁷ = 7661473 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 283763 = 7661601 / (7 + 6 + 6 + 1 + 6 + 0 + 1).

It is not an unprimeable number, because it can be changed into a prime (7661603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141855 + ... + 141908.

It is an arithmetic number, because the mean of its divisors is an integer number (1418820).

Almost surely, 2^7661601 is an apocalyptic number.

It is an amenable number.

7661601 is a deficient number, since it is larger than the sum of its proper divisors (3688959).

7661601 is a wasteful number, since it uses less digits than its factorization.

7661601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283772 (or 283766 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 7661601 is about 2767.9597179150. The cubic root of 7661601 is about 197.1392849744.

The spelling of 7661601 in words is "seven million, six hundred sixty-one thousand, six hundred one".