64620946 has 8 divisors (see below), whose sum is σ = 104387724. Its totient is φ = 29825040.

The previous prime is 64620943. The next prime is 64621003. The reversal of 64620946 is 64902646.

It can be written as a sum of positive squares in 2 ways, for example, as 46036225 + 18584721 = 6785^2 + 4311^2 .

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 (64620943) 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, 1242685 + ... + 1242736.

Almost surely, 2^64620946 is an apocalyptic number.

64620946 is a deficient number, since it is larger than the sum of its proper divisors (39766778).

64620946 is a wasteful number, since it uses less digits than its factorization.

64620946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2485436.

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 64620946 is about 8038.7154446466. The cubic root of 64620946 is about 401.2894761613.

The spelling of 64620946 in words is "sixty-four million, six hundred twenty thousand, nine hundred forty-six".