62661631 has 4 divisors (see below), whose sum is σ = 62682264. Its totient is φ = 62641000.

The previous prime is 62661629. The next prime is 62661649. The reversal of 62661631 is 13616626.

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

It is a cyclic number.

It is not a de Polignac number, because 62661631 - 2¹ = 62661629 is a prime.

It is a super-2 number, since 2×62661631² = 7852959999160322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 62661593 and 62661602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (62661331) 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, 4765 + ... + 12166.

It is an arithmetic number, because the mean of its divisors is an integer number (15670566).

Almost surely, 2^62661631 is an apocalyptic number.

62661631 is a deficient number, since it is larger than the sum of its proper divisors (20633).

62661631 is a wasteful number, since it uses less digits than its factorization.

62661631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20632.

The product of its digits is 7776, while the sum is 31.

The square root of 62661631 is about 7915.9099919087. The cubic root of 62661631 is about 397.1920661418.

The spelling of 62661631 in words is "sixty-two million, six hundred sixty-one thousand, six hundred thirty-one".