78395701 has 4 divisors (see below), whose sum is σ = 78422400. Its totient is φ = 78369004.

The previous prime is 78395699. The next prime is 78395747. The reversal of 78395701 is 10759387.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 78395701 - 2¹ = 78395699 is a prime.

It is a super-2 number, since 2×78395701² = 12291771870562802, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78395791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8311 + ... + 15028.

It is an arithmetic number, because the mean of its divisors is an integer number (19605600).

Almost surely, 2^78395701 is an apocalyptic number.

It is an amenable number.

78395701 is a deficient number, since it is larger than the sum of its proper divisors (26699).

78395701 is a wasteful number, since it uses less digits than its factorization.

78395701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26698.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 78395701 is about 8854.1346838638. The cubic root of 78395701 is about 427.9871691644.

The spelling of 78395701 in words is "seventy-eight million, three hundred ninety-five thousand, seven hundred one".