64940410 has 8 divisors (see below), whose sum is σ = 116892756. Its totient is φ = 25976160.

The previous prime is 64940389. The next prime is 64940411. The reversal of 64940410 is 1404946.

It can be written as a sum of positive squares in 2 ways, for example, as 63027721 + 1912689 = 7939^2 + 1383^2 .

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

It is not an unprimeable number, because it can be changed into a prime (64940411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3247011 + ... + 3247030.

Almost surely, 2^64940410 is an apocalyptic number.

64940410 is a deficient number, since it is larger than the sum of its proper divisors (51952346).

64940410 is a wasteful number, since it uses less digits than its factorization.

64940410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6494048.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 64940410 is about 8058.5612859865. The cubic root of 64940410 is about 401.9496690368.

The spelling of 64940410 in words is "sixty-four million, nine hundred forty thousand, four hundred ten".