61213108 has 12 divisors (see below), whose sum is σ = 116861472. Its totient is φ = 27824120.

The previous prime is 61213091. The next prime is 61213151. The reversal of 61213108 is 80131216.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 695560 + ... + 695647.

It is an arithmetic number, because the mean of its divisors is an integer number (9738456).

Almost surely, 2^61213108 is an apocalyptic number.

It is an amenable number.

61213108 is a deficient number, since it is larger than the sum of its proper divisors (55648364).

61213108 is a wasteful number, since it uses less digits than its factorization.

61213108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391222 (or 1391220 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 61213108 is about 7823.8806228112. The cubic root of 61213108 is about 394.1076002855.

It can be divided in two parts, 6121 and 3108, that added together give a palindrome (9229).

The spelling of 61213108 in words is "sixty-one million, two hundred thirteen thousand, one hundred eight".