78248611 has 4 divisors (see below), whose sum is σ = 89426992. Its totient is φ = 67070232.

The previous prime is 78248609. The next prime is 78248633. The reversal of 78248611 is 11684287.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11684287 = 17 ⋅687311.

It is a cyclic number.

It is not a de Polignac number, because 78248611 - 2¹ = 78248609 is a prime.

It is a super-2 number, since 2×78248611² = 12245690246858642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78248011) 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, 5589180 + ... + 5589193.

It is an arithmetic number, because the mean of its divisors is an integer number (22356748).

Almost surely, 2^78248611 is an apocalyptic number.

78248611 is a deficient number, since it is larger than the sum of its proper divisors (11178381).

78248611 is a wasteful number, since it uses less digits than its factorization.

78248611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11178380.

The product of its digits is 21504, while the sum is 37.

The square root of 78248611 is about 8845.8244952068. The cubic root of 78248611 is about 427.7193311552.

The spelling of 78248611 in words is "seventy-eight million, two hundred forty-eight thousand, six hundred eleven".