64401950 has 24 divisors (see below), whose sum is σ = 126835632. Its totient is φ = 24245120.

The previous prime is 64401949. The next prime is 64401971. The reversal of 64401950 is 5910446.

It is a super-2 number, since 2×64401950² = 8295222327605000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37034 + ... + 38733.

It is an arithmetic number, because the mean of its divisors is an integer number (5284818).

Almost surely, 2^64401950 is an apocalyptic number.

64401950 is a deficient number, since it is larger than the sum of its proper divisors (62433682).

64401950 is a wasteful number, since it uses less digits than its factorization.

64401950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75796 (or 75791 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 64401950 is about 8025.0825540925. The cubic root of 64401950 is about 400.8356488451.

The spelling of 64401950 in words is "sixty-four million, four hundred one thousand, nine hundred fifty".