34561621 has 4 divisors (see below), whose sum is σ = 35676544. Its totient is φ = 33446700.

The previous prime is 34561607. The next prime is 34561651. The reversal of 34561621 is 12616543.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34561621 is a prime.

It is a super-2 number, since 2×34561621² = 2389011292295282, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 34561621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34561601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 557415 + ... + 557476.

It is an arithmetic number, because the mean of its divisors is an integer number (8919136).

Almost surely, 2^34561621 is an apocalyptic number.

34561621 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

34561621 is a deficient number, since it is larger than the sum of its proper divisors (1114923).

34561621 is a wasteful number, since it uses less digits than its factorization.

34561621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114922.

The product of its digits is 4320, while the sum is 28.

The square root of 34561621 is about 5878.9132499128. The cubic root of 34561621 is about 325.7352065865.

The spelling of 34561621 in words is "thirty-four million, five hundred sixty-one thousand, six hundred twenty-one".