98644457 has 8 divisors (see below), whose sum is σ = 102615240. Its totient is φ = 94711680.

The previous prime is 98644453. The next prime is 98644463. The reversal of 98644457 is 75444689.

It can be written as a sum of positive squares in 4 ways, for example, as 3308761 + 95335696 = 1819^2 + 9764^2 .

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

It is not a de Polignac number, because 98644457 - 2² = 98644453 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98644453) 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, 4148 + ... + 14645.

It is an arithmetic number, because the mean of its divisors is an integer number (12826905).

Almost surely, 2^98644457 is an apocalyptic number.

It is an amenable number.

98644457 is a deficient number, since it is larger than the sum of its proper divisors (3970783).

98644457 is a wasteful number, since it uses less digits than its factorization.

98644457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19003.

The product of its digits is 967680, while the sum is 47.

The square root of 98644457 is about 9931.9915928277. The cubic root of 98644457 is about 462.0520436989.

The spelling of 98644457 in words is "ninety-eight million, six hundred forty-four thousand, four hundred fifty-seven".