74622021 has 8 divisors (see below), whose sum is σ = 99722400. Its totient is φ = 49634832.

The previous prime is 74621999. The next prime is 74622029. The reversal of 74622021 is 12022647.

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

It is not a de Polignac number, because 74622021 - 2⁷ = 74621893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74621982 and 74622000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74622029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26746 + ... + 29403.

It is an arithmetic number, because the mean of its divisors is an integer number (12465300).

Almost surely, 2^74622021 is an apocalyptic number.

It is an amenable number.

74622021 is a deficient number, since it is larger than the sum of its proper divisors (25100379).

74622021 is a wasteful number, since it uses less digits than its factorization.

74622021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56595.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 74622021 is about 8638.4038456187. The cubic root of 74622021 is about 421.0066951089.

Adding to 74622021 its reverse (12022647), we get a palindrome (86644668).

The spelling of 74622021 in words is "seventy-four million, six hundred twenty-two thousand, twenty-one".