65672451 has 24 divisors (see below), whose sum is σ = 105945840. Its totient is φ = 40411872.

The previous prime is 65672419. The next prime is 65672461. The reversal of 65672451 is 15427656.

It is a happy number.

It is not a de Polignac number, because 65672451 - 2⁵ = 65672419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65672461) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7236 + ... + 13553.

It is an arithmetic number, because the mean of its divisors is an integer number (4414410).

Almost surely, 2^65672451 is an apocalyptic number.

65672451 is a deficient number, since it is larger than the sum of its proper divisors (40273389).

65672451 is a wasteful number, since it uses less digits than its factorization.

65672451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20817 (or 20805 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 65672451 is about 8103.8540830891. The cubic root of 65672451 is about 403.4543556113.

The spelling of 65672451 in words is "sixty-five million, six hundred seventy-two thousand, four hundred fifty-one".