61286386 has 8 divisors (see below), whose sum is σ = 105062400. Its totient is φ = 26265588.

The previous prime is 61286369. The next prime is 61286399. The reversal of 61286386 is 68368216.

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

It is a super-2 number, since 2×61286386² = 7512042217881992, 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, 2188786 + ... + 2188813.

It is an arithmetic number, because the mean of its divisors is an integer number (13132800).

Almost surely, 2^61286386 is an apocalyptic number.

61286386 is a deficient number, since it is larger than the sum of its proper divisors (43776014).

61286386 is a wasteful number, since it uses less digits than its factorization.

61286386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4377608.

The product of its digits is 82944, while the sum is 40.

The square root of 61286386 is about 7828.5621923825. The cubic root of 61286386 is about 394.2647991901.

The spelling of 61286386 in words is "sixty-one million, two hundred eighty-six thousand, three hundred eighty-six".