61274407 has 2 divisors, whose sum is σ = 61274408. Its totient is φ = 61274406.

The previous prime is 61274399. The next prime is 61274429. The reversal of 61274407 is 70447216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61274407 - 2³ = 61274399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61275407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30637203 + 30637204.

It is an arithmetic number, because the mean of its divisors is an integer number (30637204).

Almost surely, 2^61274407 is an apocalyptic number.

61274407 is a deficient number, since it is larger than the sum of its proper divisors (1).

61274407 is an equidigital number, since it uses as much as digits as its factorization.

61274407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 61274407 is about 7827.7970719737. The cubic root of 61274407 is about 394.2391099298.

The spelling of 61274407 in words is "sixty-one million, two hundred seventy-four thousand, four hundred seven".