78200743 has 2 divisors, whose sum is σ = 78200744. Its totient is φ = 78200742.

The previous prime is 78200737. The next prime is 78200753. The reversal of 78200743 is 34700287.

It is a weak prime.

It is an emirp because it is prime and its reverse (34700287) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78200743 - 2²⁵ = 44646311 is a prime.

It is a super-2 number, since 2×78200743² = 12230712411504098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78200753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39100371 + 39100372.

It is an arithmetic number, because the mean of its divisors is an integer number (39100372).

Almost surely, 2^78200743 is an apocalyptic number.

78200743 is a deficient number, since it is larger than the sum of its proper divisors (1).

78200743 is an equidigital number, since it uses as much as digits as its factorization.

78200743 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 78200743 is about 8843.1183979409. The cubic root of 78200743 is about 427.6320953349.

The spelling of 78200743 in words is "seventy-eight million, two hundred thousand, seven hundred forty-three".