64861958 has 8 divisors (see below), whose sum is σ = 111191952. Its totient is φ = 27797976.

The previous prime is 64861949. The next prime is 64861967. The reversal of 64861958 is 85916846.

It is an interprime number because it is at equal distance from previous prime (64861949) and next prime (64861967).

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

It is a congruent number.

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, 2316485 + ... + 2316512.

It is an arithmetic number, because the mean of its divisors is an integer number (13898994).

Almost surely, 2^64861958 is an apocalyptic number.

64861958 is a deficient number, since it is larger than the sum of its proper divisors (46329994).

64861958 is a wasteful number, since it uses less digits than its factorization.

64861958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4633006.

The product of its digits is 414720, while the sum is 47.

The square root of 64861958 is about 8053.6921967505. The cubic root of 64861958 is about 401.7877438596.

The spelling of 64861958 in words is "sixty-four million, eight hundred sixty-one thousand, nine hundred fifty-eight".