78900265 has 8 divisors (see below), whose sum is σ = 94827528. Its totient is φ = 63022080.

The previous prime is 78900251. The next prime is 78900307. The reversal of 78900265 is 56200987.

It can be written as a sum of positive squares in 4 ways, for example, as 5438224 + 73462041 = 2332^2 + 8571^2 .

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

It is not a de Polignac number, because 78900265 - 2⁵ = 78900233 is a prime.

It is a Duffinian number.

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, 8632 + ... + 15241.

It is an arithmetic number, because the mean of its divisors is an integer number (11853441).

Almost surely, 2^78900265 is an apocalyptic number.

It is an amenable number.

78900265 is a deficient number, since it is larger than the sum of its proper divisors (15927263).

78900265 is a wasteful number, since it uses less digits than its factorization.

78900265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24539.

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

The square root of 78900265 is about 8882.5821133272. The cubic root of 78900265 is about 428.9033983202.

The spelling of 78900265 in words is "seventy-eight million, nine hundred thousand, two hundred sixty-five".