65421946 has 4 divisors (see below), whose sum is σ = 98132922. Its totient is φ = 32710972.

The previous prime is 65421929. The next prime is 65421953. The reversal of 65421946 is 64912456.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 64979721 + 442225 = 8061^2 + 665^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16355485 + ... + 16355488.

Almost surely, 2^65421946 is an apocalyptic number.

65421946 is a deficient number, since it is larger than the sum of its proper divisors (32710976).

65421946 is a wasteful number, since it uses less digits than its factorization.

65421946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32710975.

The product of its digits is 51840, while the sum is 37.

The square root of 65421946 is about 8088.3833984301. The cubic root of 65421946 is about 402.9407150074.

The spelling of 65421946 in words is "sixty-five million, four hundred twenty-one thousand, nine hundred forty-six".