78498211 has 4 divisors (see below), whose sum is σ = 85634424. Its totient is φ = 71362000.

The previous prime is 78498191. The next prime is 78498229. The reversal of 78498211 is 11289487.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 78498211 - 2⁵ = 78498179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78498611) 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, 3568090 + ... + 3568111.

It is an arithmetic number, because the mean of its divisors is an integer number (21408606).

Almost surely, 2^78498211 is an apocalyptic number.

78498211 is a deficient number, since it is larger than the sum of its proper divisors (7136213).

78498211 is a wasteful number, since it uses less digits than its factorization.

78498211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7136212.

The product of its digits is 32256, while the sum is 40.

The square root of 78498211 is about 8859.9216136487. The cubic root of 78498211 is about 428.1736328578.

The spelling of 78498211 in words is "seventy-eight million, four hundred ninety-eight thousand, two hundred eleven".