61621058 has 8 divisors (see below), whose sum is σ = 94929852. Its totient is φ = 29977776.

The previous prime is 61621057. The next prime is 61621061. The reversal of 61621058 is 85012616.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 47430769 + 14190289 = 6887^2 + 3767^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 61621058.

It is not an unprimeable number, because it can be changed into a prime (61621057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416285 + ... + 416432.

Almost surely, 2^61621058 is an apocalyptic number.

61621058 is a deficient number, since it is larger than the sum of its proper divisors (33308794).

61621058 is a wasteful number, since it uses less digits than its factorization.

61621058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832756.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 61621058 is about 7849.9081523289. The cubic root of 61621058 is about 394.9811623768.

The spelling of 61621058 in words is "sixty-one million, six hundred twenty-one thousand, fifty-eight".