10661394 has 32 divisors (see below), whose sum is σ = 23002560. Its totient is φ = 3283200.

The previous prime is 10661389. The next prime is 10661401. The reversal of 10661394 is 49316601.

It is a super-2 number, since 2×10661394² = 227330644046472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3534 + ... + 5814.

It is an arithmetic number, because the mean of its divisors is an integer number (718830).

Almost surely, 2^10661394 is an apocalyptic number.

10661394 is an abundant number, since it is smaller than the sum of its proper divisors (12341166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10661394 is a wasteful number, since it uses less digits than its factorization.

10661394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2346.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 10661394 is about 3265.1790150006. The cubic root of 10661394 is about 220.0922065280.

Adding to 10661394 its reverse (49316601), we get a palindrome (59977995).

The spelling of 10661394 in words is "ten million, six hundred sixty-one thousand, three hundred ninety-four".