60998809 has 4 divisors (see below), whose sum is σ = 62296704. Its totient is φ = 59700916.

The previous prime is 60998801. The next prime is 60998827. The reversal of 60998809 is 90889906.

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 60998809 - 2³ = 60998801 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (60998801) 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, 648877 + ... + 648970.

It is an arithmetic number, because the mean of its divisors is an integer number (15574176).

Almost surely, 2^60998809 is an apocalyptic number.

It is an amenable number.

60998809 is a deficient number, since it is larger than the sum of its proper divisors (1297895).

60998809 is a wasteful number, since it uses less digits than its factorization.

60998809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297894.

The product of its (nonzero) digits is 279936, while the sum is 49.

The square root of 60998809 is about 7810.1734295725. The cubic root of 60998809 is about 393.6471563437.

The spelling of 60998809 in words is "sixty million, nine hundred ninety-eight thousand, eight hundred nine".