74940647 has 8 divisors (see below), whose sum is σ = 78295776. Its totient is φ = 71593632.

The previous prime is 74940643. The next prime is 74940667. The reversal of 74940647 is 74604947.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74940647 - 2² = 74940643 is a prime.

It is a super-2 number, since 2×74940647² = 11232201145557218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74940643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24233 + ... + 27149.

It is an arithmetic number, because the mean of its divisors is an integer number (9786972).

Almost surely, 2^74940647 is an apocalyptic number.

74940647 is a deficient number, since it is larger than the sum of its proper divisors (3355129).

74940647 is a wasteful number, since it uses less digits than its factorization.

74940647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4057.

The product of its (nonzero) digits is 169344, while the sum is 41.

The square root of 74940647 is about 8656.8266125642. The cubic root of 74940647 is about 421.6050582726.

The spelling of 74940647 in words is "seventy-four million, nine hundred forty thousand, six hundred forty-seven".