94643640 has 384 divisors, whose sum is σ = 396264960. Its totient is φ = 19782144.

The previous prime is 94643623. The next prime is 94643657. The reversal of 94643640 is 4634649.

94643640 is a `hidden beast` number, since 9 + 4 + 6 + 4 + 3 + 640 = 666.

It is an interprime number because it is at equal distance from previous prime (94643623) and next prime (94643657).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 94643595 and 94643604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 884467 + ... + 884573.

It is an arithmetic number, because the mean of its divisors is an integer number (1031940).

Almost surely, 2^94643640 is an apocalyptic number.

94643640 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 94643640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198132480).

94643640 is an abundant number, since it is smaller than the sum of its proper divisors (301621320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

94643640 is a wasteful number, since it uses less digits than its factorization.

94643640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 94643640 is about 9728.4962866827. The cubic root of 94643640 is about 455.7190097129.

The spelling of 94643640 in words is "ninety-four million, six hundred forty-three thousand, six hundred forty".