981062657 has 4 divisors (see below), whose sum is σ = 982249776. Its totient is φ = 979875540.

The previous prime is 981062653. The next prime is 981062671. The reversal of 981062657 is 756260189.

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 981062657 - 2² = 981062653 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (981062651) 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, 592319 + ... + 593972.

It is an arithmetic number, because the mean of its divisors is an integer number (245562444).

Almost surely, 2^981062657 is an apocalyptic number.

It is an amenable number.

981062657 is a deficient number, since it is larger than the sum of its proper divisors (1187119).

981062657 is a wasteful number, since it uses less digits than its factorization.

981062657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1187118.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 981062657 is about 31321.9197527865. The cubic root of 981062657 is about 993.6472807505.

The spelling of 981062657 in words is "nine hundred eighty-one million, sixty-two thousand, six hundred fifty-seven".