61970437 has 2 divisors, whose sum is σ = 61970438. Its totient is φ = 61970436.

The previous prime is 61970429. The next prime is 61970459. The reversal of 61970437 is 73407916.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53670276 + 8300161 = 7326^2 + 2881^2 .

It is a cyclic number.

It is not a de Polignac number, because 61970437 - 2³ = 61970429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61970396 and 61970405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61970407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30985218 + 30985219.

It is an arithmetic number, because the mean of its divisors is an integer number (30985219).

Almost surely, 2^61970437 is an apocalyptic number.

It is an amenable number.

61970437 is a deficient number, since it is larger than the sum of its proper divisors (1).

61970437 is an equidigital number, since it uses as much as digits as its factorization.

61970437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 61970437 is about 7872.1303978021. The cubic root of 61970437 is about 395.7262438972.

The spelling of 61970437 in words is "sixty-one million, nine hundred seventy thousand, four hundred thirty-seven".