78650505 has 48 divisors (see below), whose sum is σ = 142781184. Its totient is φ = 40008960.

The previous prime is 78650479. The next prime is 78650513. The reversal of 78650505 is 50505687.

It is not a de Polignac number, because 78650505 - 2⁹ = 78649993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78650505.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 86262 + ... + 87168.

It is an arithmetic number, because the mean of its divisors is an integer number (2974608).

Almost surely, 2^78650505 is an apocalyptic number.

It is an amenable number.

78650505 is a deficient number, since it is larger than the sum of its proper divisors (64130679).

78650505 is a wasteful number, since it uses less digits than its factorization.

78650505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006 (or 1003 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The square root of 78650505 is about 8868.5119946922. The cubic root of 78650505 is about 428.4503531793.

The spelling of 78650505 in words is "seventy-eight million, six hundred fifty thousand, five hundred five".