78260905 has 8 divisors (see below), whose sum is σ = 98856000. Its totient is φ = 59313456.

The previous prime is 78260893. The next prime is 78260947. The reversal of 78260905 is 50906287.

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

It is a cyclic number.

It is not a de Polignac number, because 78260905 - 2⁵ = 78260873 is a prime.

It is a super-2 number, since 2×78260905² = 12249538502838050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 411805 + ... + 411994.

It is an arithmetic number, because the mean of its divisors is an integer number (12357000).

Almost surely, 2^78260905 is an apocalyptic number.

It is an amenable number.

78260905 is a deficient number, since it is larger than the sum of its proper divisors (20595095).

78260905 is a wasteful number, since it uses less digits than its factorization.

78260905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823823.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 78260905 is about 8846.5193720468. The cubic root of 78260905 is about 427.7417303008.

The spelling of 78260905 in words is "seventy-eight million, two hundred sixty thousand, nine hundred five".