7645961 has 4 divisors (see below), whose sum is σ = 8048400. Its totient is φ = 7243524.

The previous prime is 7645951. The next prime is 7645991. The reversal of 7645961 is 1695467.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7645961 - 2¹⁰ = 7644937 is a prime.

It is a super-2 number, since 2×7645961² = 116921439227042, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7645951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201191 + ... + 201228.

It is an arithmetic number, because the mean of its divisors is an integer number (2012100).

Almost surely, 2^7645961 is an apocalyptic number.

It is an amenable number.

7645961 is a deficient number, since it is larger than the sum of its proper divisors (402439).

7645961 is a wasteful number, since it uses less digits than its factorization.

7645961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402438.

The product of its digits is 45360, while the sum is 38.

The square root of 7645961 is about 2765.1330890212. The cubic root of 7645961 is about 197.0050502454.

The spelling of 7645961 in words is "seven million, six hundred forty-five thousand, nine hundred sixty-one".