94207681 has 4 divisors (see below), whose sum is σ = 99166000. Its totient is φ = 89249364.

The previous prime is 94207637. The next prime is 94207691. The reversal of 94207681 is 18670249.

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, and also an emirpimes, since its reverse is a distinct semiprime: 18670249 = 13 ⋅1436173.

It is a cyclic number.

It is not a de Polignac number, because 94207681 - 2¹³ = 94199489 is a prime.

It is a super-2 number, since 2×94207681² = 17750174318795522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 94207681.

It is not an unprimeable number, because it can be changed into a prime (94207691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2479131 + ... + 2479168.

It is an arithmetic number, because the mean of its divisors is an integer number (24791500).

Almost surely, 2^94207681 is an apocalyptic number.

It is an amenable number.

94207681 is a deficient number, since it is larger than the sum of its proper divisors (4958319).

94207681 is a wasteful number, since it uses less digits than its factorization.

94207681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4958318.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 94207681 is about 9706.0641353743. The cubic root of 94207681 is about 455.0182031924.

The spelling of 94207681 in words is "ninety-four million, two hundred seven thousand, six hundred eighty-one".