74347772 has 6 divisors (see below), whose sum is σ = 130108608. Its totient is φ = 37173884.

The previous prime is 74347771. The next prime is 74347781. The reversal of 74347772 is 27774347.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74347771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9293468 + ... + 9293475.

It is an arithmetic number, because the mean of its divisors is an integer number (21684768).

Almost surely, 2^74347772 is an apocalyptic number.

It is an amenable number.

74347772 is a deficient number, since it is larger than the sum of its proper divisors (55760836).

74347772 is a wasteful number, since it uses less digits than its factorization.

74347772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18586947 (or 18586945 counting only the distinct ones).

The product of its digits is 230496, while the sum is 41.

The square root of 74347772 is about 8622.5154102501. The cubic root of 74347772 is about 420.4903041958.

The spelling of 74347772 in words is "seventy-four million, three hundred forty-seven thousand, seven hundred seventy-two".