65642404 has 9 divisors (see below), whose sum is σ = 114902571. Its totient is φ = 32813100.

The previous prime is 65642377. The next prime is 65642413. The reversal of 65642404 is 40424656.

The square root of 65642404 is 8102.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 14179 + ... + 18229.

Almost surely, 2^65642404 is an apocalyptic number.

65642404 is the 8102-nd square number.

It is an amenable number.

65642404 is a deficient number, since it is larger than the sum of its proper divisors (49260167).

65642404 is an frugal number, since it uses more digits than its factorization.

65642404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8106 (or 4053 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The cubic root of 65642404 is about 403.3928156397.

The spelling of 65642404 in words is "sixty-five million, six hundred forty-two thousand, four hundred four".