62661421 has 2 divisors, whose sum is σ = 62661422. Its totient is φ = 62661420.

The previous prime is 62661409. The next prime is 62661427. The reversal of 62661421 is 12416626.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41602500 + 21058921 = 6450^2 + 4589^2 .

It is a cyclic number.

It is not a de Polignac number, because 62661421 - 2²¹ = 60564269 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 62661421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (62661427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31330710 + 31330711.

It is an arithmetic number, because the mean of its divisors is an integer number (31330711).

Almost surely, 2^62661421 is an apocalyptic number.

It is an amenable number.

62661421 is a deficient number, since it is larger than the sum of its proper divisors (1).

62661421 is an equidigital number, since it uses as much as digits as its factorization.

62661421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 28.

The square root of 62661421 is about 7915.8967274719. The cubic root of 62661421 is about 397.1916224337.

The spelling of 62661421 in words is "sixty-two million, six hundred sixty-one thousand, four hundred twenty-one".