1061720098 has 4 divisors (see below), whose sum is σ = 1592580150. Its totient is φ = 530860048.

The previous prime is 1061720041. The next prime is 1061720111. The reversal of 1061720098 is 8900271601.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1033172449 + 28547649 = 32143^2 + 5343^2 .

It is a super-2 number, since 2×1061720098² = 2254499132994259208, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265430023 + ... + 265430026.

Almost surely, 2^1061720098 is an apocalyptic number.

1061720098 is a deficient number, since it is larger than the sum of its proper divisors (530860052).

1061720098 is an equidigital number, since it uses as much as digits as its factorization.

1061720098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530860051.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 1061720098 is about 32584.0466793184. The cubic root of 1061720098 is about 1020.1640444858.

Adding to 1061720098 its reverse (8900271601), we get a palindrome (9961991699).

The spelling of 1061720098 in words is "one billion, sixty-one million, seven hundred twenty thousand, ninety-eight".