78240063 has 16 divisors (see below), whose sum is σ = 117476352. Its totient is φ = 45888000.

The previous prime is 78240053. The next prime is 78240073. The reversal of 78240063 is 36004287.

It is an interprime number because it is at equal distance from previous prime (78240053) and next prime (78240073).

It is not a de Polignac number, because 78240063 - 2⁴ = 78240047 is a prime.

It is a super-2 number, since 2×78240063² = 12243014916487938, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78240063.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78240053) 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, 37218 + ... + 39263.

It is an arithmetic number, because the mean of its divisors is an integer number (7342272).

Almost surely, 2^78240063 is an apocalyptic number.

78240063 is a deficient number, since it is larger than the sum of its proper divisors (39236289).

78240063 is a wasteful number, since it uses less digits than its factorization.

78240063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76526.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 78240063 is about 8845.3413161958. The cubic root of 78240063 is about 427.7037556797.

The spelling of 78240063 in words is "seventy-eight million, two hundred forty thousand, sixty-three".