62631397 has 4 divisors (see below), whose sum is σ = 62784940. Its totient is φ = 62477856.

The previous prime is 62631389. The next prime is 62631407. The reversal of 62631397 is 79313626.

It is a Cunningham number, because it is equal to 7914²+1.

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

It can be written as a sum of positive squares in 2 ways, for example, as 57244356 + 5387041 = 7566^2 + 2321^2 .

It is a cyclic number.

It is not a de Polignac number, because 62631397 - 2³ = 62631389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (62631197) 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, 76158 + ... + 76975.

It is an arithmetic number, because the mean of its divisors is an integer number (15696235).

Almost surely, 2^62631397 is an apocalyptic number.

It is an amenable number.

62631397 is a deficient number, since it is larger than the sum of its proper divisors (153543).

62631397 is a wasteful number, since it uses less digits than its factorization.

62631397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153542.

The product of its digits is 40824, while the sum is 37.

The square root of 62631397 is about 7914.0000631792. Note that the first 4 decimals coincide. The cubic root of 62631397 is about 397.1281746416.

It can be divided in two parts, 626 and 31397, that added together give a palindrome (32023).

The spelling of 62631397 in words is "sixty-two million, six hundred thirty-one thousand, three hundred ninety-seven".