7661213 has 8 divisors (see below), whose sum is σ = 8773440. Its totient is φ = 6553440.

The previous prime is 7661207. The next prime is 7661221. The reversal of 7661213 is 3121667.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7661213 - 2⁴ = 7661197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7661233) 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, 4433 + ... + 5913.

It is an arithmetic number, because the mean of its divisors is an integer number (1096680).

Almost surely, 2^7661213 is an apocalyptic number.

It is an amenable number.

7661213 is a deficient number, since it is larger than the sum of its proper divisors (1112227).

7661213 is a wasteful number, since it uses less digits than its factorization.

7661213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2227.

The product of its digits is 1512, while the sum is 26.

The square root of 7661213 is about 2767.8896293024. The cubic root of 7661213 is about 197.1359570654.

The spelling of 7661213 in words is "seven million, six hundred sixty-one thousand, two hundred thirteen".