78437085 has 16 divisors (see below), whose sum is σ = 127868544. Its totient is φ = 41043392.

The previous prime is 78437081. The next prime is 78437119. The reversal of 78437085 is 58073487.

It is a cyclic number.

It is not a de Polignac number, because 78437085 - 2² = 78437081 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78437081) 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, 48537 + ... + 50126.

It is an arithmetic number, because the mean of its divisors is an integer number (7991784).

Almost surely, 2^78437085 is an apocalyptic number.

It is an amenable number.

78437085 is a deficient number, since it is larger than the sum of its proper divisors (49431459).

78437085 is a wasteful number, since it uses less digits than its factorization.

78437085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98724.

The product of its (nonzero) digits is 188160, while the sum is 42.

The square root of 78437085 is about 8856.4713627946. The cubic root of 78437085 is about 428.0624654076.

The spelling of 78437085 in words is "seventy-eight million, four hundred thirty-seven thousand, eighty-five".