61662158 has 4 divisors (see below), whose sum is σ = 92493240. Its totient is φ = 30831078.

The previous prime is 61662157. The next prime is 61662173. The reversal of 61662158 is 85126616.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61662157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15415538 + ... + 15415541.

It is an arithmetic number, because the mean of its divisors is an integer number (23123310).

Almost surely, 2^61662158 is an apocalyptic number.

61662158 is a deficient number, since it is larger than the sum of its proper divisors (30831082).

61662158 is a wasteful number, since it uses less digits than its factorization.

61662158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30831081.

The product of its digits is 17280, while the sum is 35.

The square root of 61662158 is about 7852.5255809835. The cubic root of 61662158 is about 395.0689576773.

The spelling of 61662158 in words is "sixty-one million, six hundred sixty-two thousand, one hundred fifty-eight".