78503783 has 8 divisors (see below), whose sum is σ = 81496800. Its totient is φ = 75529888.

The previous prime is 78503753. The next prime is 78503791. The reversal of 78503783 is 38730587.

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 78503783 - 2¹⁰ = 78502759 is a prime.

It is a super-2 number, since 2×78503783² = 12325687890622178, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78503783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78503753) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3878 + ... + 13116.

It is an arithmetic number, because the mean of its divisors is an integer number (10187100).

Almost surely, 2^78503783 is an apocalyptic number.

78503783 is a deficient number, since it is larger than the sum of its proper divisors (2993017).

78503783 is a wasteful number, since it uses less digits than its factorization.

78503783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9561.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 78503783 is about 8860.2360578034. The cubic root of 78503783 is about 428.1837635644.

The spelling of 78503783 in words is "seventy-eight million, five hundred three thousand, seven hundred eighty-three".