7421650 has 24 divisors (see below), whose sum is σ = 13909824. Its totient is φ = 2946000.

The previous prime is 7421641. The next prime is 7421677. The reversal of 7421650 is 561247.

It is a super-3 number, since 3×7421650³ (a number of 22 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7059 + ... + 8041.

It is an arithmetic number, because the mean of its divisors is an integer number (579576).

Almost surely, 2^7421650 is an apocalyptic number.

7421650 is a deficient number, since it is larger than the sum of its proper divisors (6488174).

7421650 is a wasteful number, since it uses less digits than its factorization.

7421650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146 (or 1141 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 7421650 is about 2724.2705445678. The cubic root of 7421650 is about 195.0593726724.

Adding to 7421650 its reverse (561247), we get a palindrome (7982897).

The spelling of 7421650 in words is "seven million, four hundred twenty-one thousand, six hundred fifty".