7621634 has 4 divisors (see below), whose sum is σ = 11432454. Its totient is φ = 3810816.

The previous prime is 7621633. The next prime is 7621639. The reversal of 7621634 is 4361267.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4361267 = 89 ⋅49003.

It can be written as a sum of positive squares in only one way, i.e., 7546009 + 75625 = 2747^2 + 275^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7621597 and 7621606.

It is not an unprimeable number, because it can be changed into a prime (7621633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1905407 + ... + 1905410.

Almost surely, 2^7621634 is an apocalyptic number.

7621634 is a deficient number, since it is larger than the sum of its proper divisors (3810820).

7621634 is a wasteful number, since it uses less digits than its factorization.

7621634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3810819.

The product of its digits is 6048, while the sum is 29.

The square root of 7621634 is about 2760.7307003763. The cubic root of 7621634 is about 196.7958925983.

The spelling of 7621634 in words is "seven million, six hundred twenty-one thousand, six hundred thirty-four".