61308356 has 12 divisors (see below), whose sum is σ = 107427600. Its totient is φ = 30614760.

The previous prime is 61308347. The next prime is 61308367. The reversal of 61308356 is 65380316.

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, 6206 + ... + 12693.

It is an arithmetic number, because the mean of its divisors is an integer number (8952300).

Almost surely, 2^61308356 is an apocalyptic number.

It is an amenable number.

61308356 is a deficient number, since it is larger than the sum of its proper divisors (46119244).

61308356 is a wasteful number, since it uses less digits than its factorization.

61308356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19714 (or 19712 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 61308356 is about 7829.9652617365. The cubic root of 61308356 is about 394.3119056975.

The spelling of 61308356 in words is "sixty-one million, three hundred eight thousand, three hundred fifty-six".