10661487 has 8 divisors (see below), whose sum is σ = 14243760. Its totient is φ = 7093440.

The previous prime is 10661479. The next prime is 10661491. The reversal of 10661487 is 78416601.

It is a happy number.

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

It is not a de Polignac number, because 10661487 - 2³ = 10661479 is a prime.

It is a super-2 number, since 2×10661487² = 227334610102338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10661467) 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, 1662 + ... + 4907.

It is an arithmetic number, because the mean of its divisors is an integer number (1780470).

Almost surely, 2^10661487 is an apocalyptic number.

10661487 is a deficient number, since it is larger than the sum of its proper divisors (3582273).

10661487 is an equidigital number, since it uses as much as digits as its factorization.

10661487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7113.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 10661487 is about 3265.1932561489. The cubic root of 10661487 is about 220.0928464855.

The spelling of 10661487 in words is "ten million, six hundred sixty-one thousand, four hundred eighty-seven".