61642658 has 16 divisors (see below), whose sum is σ = 115280064. Its totient is φ = 24016560.

The previous prime is 61642649. The next prime is 61642717. The reversal of 61642658 is 85624616.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199985 + ... + 200292.

It is an arithmetic number, because the mean of its divisors is an integer number (7205004).

Almost surely, 2^61642658 is an apocalyptic number.

61642658 is a deficient number, since it is larger than the sum of its proper divisors (53637406).

61642658 is a wasteful number, since it uses less digits than its factorization.

61642658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400297.

The product of its digits is 69120, while the sum is 38.

The square root of 61642658 is about 7851.2838440602. The cubic root of 61642658 is about 395.0273078381.

The spelling of 61642658 in words is "sixty-one million, six hundred forty-two thousand, six hundred fifty-eight".