61622011 has 4 divisors (see below), whose sum is σ = 67224024. Its totient is φ = 56020000.

The previous prime is 61621999. The next prime is 61622023. The reversal of 61622011 is 11022616.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (61621999) and next prime (61622023).

It is a cyclic number.

It is not a de Polignac number, because 61622011 - 2⁵ = 61621979 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 61622011.

It is not an unprimeable number, because it can be changed into a prime (61622611) 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, 2800990 + ... + 2801011.

It is an arithmetic number, because the mean of its divisors is an integer number (16806006).

Almost surely, 2^61622011 is an apocalyptic number.

61622011 is a deficient number, since it is larger than the sum of its proper divisors (5602013).

61622011 is a wasteful number, since it uses less digits than its factorization.

61622011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5602012.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 61622011 is about 7849.9688534414. The cubic root of 61622011 is about 394.9831985590.

Adding to 61622011 its reverse (11022616), we get a palindrome (72644627).

The spelling of 61622011 in words is "sixty-one million, six hundred twenty-two thousand, eleven".