61022613 has 4 divisors (see below), whose sum is σ = 81363488. Its totient is φ = 40681740.

The previous prime is 61022609. The next prime is 61022627. The reversal of 61022613 is 31622016.

It is a happy number.

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 not a de Polignac number, because 61022613 - 2² = 61022609 is a prime.

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 61022613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61022653) 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, 10170433 + ... + 10170438.

It is an arithmetic number, because the mean of its divisors is an integer number (20340872).

Almost surely, 2^61022613 is an apocalyptic number.

It is an amenable number.

61022613 is a deficient number, since it is larger than the sum of its proper divisors (20340875).

61022613 is a wasteful number, since it uses less digits than its factorization.

61022613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20340874.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 61022613 is about 7811.6971907518. The cubic root of 61022613 is about 393.6983549296.

Adding to 61022613 its reverse (31622016), we get a palindrome (92644629).

The spelling of 61022613 in words is "sixty-one million, twenty-two thousand, six hundred thirteen".