662425631 has 4 divisors (see below), whose sum is σ = 757057872. Its totient is φ = 567793392.

The previous prime is 662425619. The next prime is 662425637. The reversal of 662425631 is 136524266.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136524266 = 2 ⋅68262133.

It is a cyclic number.

It is not a de Polignac number, because 662425631 - 2¹⁸ = 662163487 is a prime.

It is a super-2 number, since 2×662425631² = 877615433211496322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 662425591 and 662425600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662425637) 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, 47316110 + ... + 47316123.

It is an arithmetic number, because the mean of its divisors is an integer number (189264468).

Almost surely, 2^662425631 is an apocalyptic number.

662425631 is a deficient number, since it is larger than the sum of its proper divisors (94632241).

662425631 is an equidigital number, since it uses as much as digits as its factorization.

662425631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94632240.

The product of its digits is 51840, while the sum is 35.

The square root of 662425631 is about 25737.6306407563. The cubic root of 662425631 is about 871.7240797017.

Adding to 662425631 its reverse (136524266), we get a palindrome (798949897).

The spelling of 662425631 in words is "six hundred sixty-two million, four hundred twenty-five thousand, six hundred thirty-one".