78483657 has 16 divisors (see below), whose sum is σ = 123719040. Its totient is φ = 43300992.

The previous prime is 78483641. The next prime is 78483673. The reversal of 78483657 is 75638487.

It is an interprime number because it is at equal distance from previous prime (78483641) and next prime (78483673).

It is not a de Polignac number, because 78483657 - 2⁴ = 78483641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78483857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63828 + ... + 65045.

It is an arithmetic number, because the mean of its divisors is an integer number (7732440).

Almost surely, 2^78483657 is an apocalyptic number.

It is an amenable number.

78483657 is a deficient number, since it is larger than the sum of its proper divisors (45235383).

78483657 is a wasteful number, since it uses less digits than its factorization.

78483657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128912.

The product of its digits is 1128960, while the sum is 48.

The square root of 78483657 is about 8859.1002364800. The cubic root of 78483657 is about 428.1471693068.

The spelling of 78483657 in words is "seventy-eight million, four hundred eighty-three thousand, six hundred fifty-seven".