62640407 has 2 divisors, whose sum is σ = 62640408. Its totient is φ = 62640406.

The previous prime is 62640353. The next prime is 62640421. The reversal of 62640407 is 70404626.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 62640407 - 2¹⁰ = 62639383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 62640407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (62640607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31320203 + 31320204.

It is an arithmetic number, because the mean of its divisors is an integer number (31320204).

Almost surely, 2^62640407 is an apocalyptic number.

62640407 is a deficient number, since it is larger than the sum of its proper divisors (1).

62640407 is an equidigital number, since it uses as much as digits as its factorization.

62640407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 62640407 is about 7914.5692870806. The cubic root of 62640407 is about 397.1472170253.

The spelling of 62640407 in words is "sixty-two million, six hundred forty thousand, four hundred seven".