7621145 has 8 divisors (see below), whose sum is σ = 10451904. Its totient is φ = 5225904.

The previous prime is 7621123. The next prime is 7621177. The reversal of 7621145 is 5411267.

7621145 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7621145 is a prime.

It is a super-2 number, since 2×7621145² = 116163702222050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108839 + ... + 108908.

It is an arithmetic number, because the mean of its divisors is an integer number (1306488).

Almost surely, 2^7621145 is an apocalyptic number.

It is an amenable number.

7621145 is a deficient number, since it is larger than the sum of its proper divisors (2830759).

7621145 is a wasteful number, since it uses less digits than its factorization.

7621145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217759.

The product of its digits is 1680, while the sum is 26.

The square root of 7621145 is about 2760.6421354460. The cubic root of 7621145 is about 196.7916837349.

The spelling of 7621145 in words is "seven million, six hundred twenty-one thousand, one hundred forty-five".