61312858 has 8 divisors (see below), whose sum is σ = 92880180. Its totient is φ = 30352800.

The previous prime is 61312841. The next prime is 61312861. The reversal of 61312858 is 85821316.

It can be written as a sum of positive squares in 2 ways, for example, as 60949249 + 363609 = 7807^2 + 603^2 .

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

It is a super-2 number, since 2×61312858² = 7518533112256328, which contains 22 as substring.

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, 151563 + ... + 151966.

Almost surely, 2^61312858 is an apocalyptic number.

61312858 is a deficient number, since it is larger than the sum of its proper divisors (31567322).

61312858 is a wasteful number, since it uses less digits than its factorization.

61312858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303632.

The product of its digits is 11520, while the sum is 34.

The square root of 61312858 is about 7830.2527417702. The cubic root of 61312858 is about 394.3215571756.

The spelling of 61312858 in words is "sixty-one million, three hundred twelve thousand, eight hundred fifty-eight".