9661630 has 16 divisors (see below), whose sum is σ = 18972144. Its totient is φ = 3513280.

The previous prime is 9661583. The next prime is 9661637. The reversal of 9661630 is 361669.

It is a junction number, because it is equal to n+sod(n) for n = 9661592 and 9661601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9661637) 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, 43807 + ... + 44026.

It is an arithmetic number, because the mean of its divisors is an integer number (1185759).

Almost surely, 2^9661630 is an apocalyptic number.

9661630 is a deficient number, since it is larger than the sum of its proper divisors (9310514).

9661630 is a wasteful number, since it uses less digits than its factorization.

9661630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87851.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 9661630 is about 3108.3162644750. The cubic root of 9661630 is about 212.9855471543.

The spelling of 9661630 in words is "nine million, six hundred sixty-one thousand, six hundred thirty".