981462661 has 4 divisors (see below), whose sum is σ = 981669024. Its totient is φ = 981256300.

The previous prime is 981462623. The next prime is 981462673. The reversal of 981462661 is 166264189.

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 981462661 - 2⁹ = 981462149 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 (981462061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95875 + ... + 105616.

It is an arithmetic number, because the mean of its divisors is an integer number (245417256).

Almost surely, 2^981462661 is an apocalyptic number.

It is an amenable number.

981462661 is a deficient number, since it is larger than the sum of its proper divisors (206363).

981462661 is a wasteful number, since it uses less digits than its factorization.

981462661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206362.

The product of its digits is 124416, while the sum is 43.

The square root of 981462661 is about 31328.3044705582. The cubic root of 981462661 is about 993.7823074237.

The spelling of 981462661 in words is "nine hundred eighty-one million, four hundred sixty-two thousand, six hundred sixty-one".