988755641 has 4 divisors (see below), whose sum is σ = 991689972. Its totient is φ = 985821312.

The previous prime is 988755637. The next prime is 988755659. The reversal of 988755641 is 146557889.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 146557889 = 43 ⋅3408323.

It can be written as a sum of positive squares in 2 ways, for example, as 491287225 + 497468416 = 22165^2 + 22304^2 .

It is a cyclic number.

It is not a de Polignac number, because 988755641 - 2² = 988755637 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (988755661) 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, 1466660 + ... + 1467333.

It is an arithmetic number, because the mean of its divisors is an integer number (247922493).

Almost surely, 2^988755641 is an apocalyptic number.

It is an amenable number.

988755641 is a deficient number, since it is larger than the sum of its proper divisors (2934331).

988755641 is a wasteful number, since it uses less digits than its factorization.

988755641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2934330.

The product of its digits is 2419200, while the sum is 53.

The square root of 988755641 is about 31444.4850649522. The cubic root of 988755641 is about 996.2377435105.

The spelling of 988755641 in words is "nine hundred eighty-eight million, seven hundred fifty-five thousand, six hundred forty-one".