61400359 has 2 divisors, whose sum is σ = 61400360. Its totient is φ = 61400358.

The previous prime is 61400357. The next prime is 61400387. The reversal of 61400359 is 95300416.

It is an a-pointer prime, because the next prime (61400387) can be obtained adding 61400359 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61400359 - 2¹ = 61400357 is a prime.

Together with 61400357, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61400351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30700179 + 30700180.

It is an arithmetic number, because the mean of its divisors is an integer number (30700180).

Almost surely, 2^61400359 is an apocalyptic number.

61400359 is a deficient number, since it is larger than the sum of its proper divisors (1).

61400359 is an equidigital number, since it uses as much as digits as its factorization.

61400359 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 61400359 is about 7835.8381172661. The cubic root of 61400359 is about 394.5090498218.

The spelling of 61400359 in words is "sixty-one million, four hundred thousand, three hundred fifty-nine".