613749707 has 16 divisors (see below), whose sum is σ = 651567840. Its totient is φ = 577124352.

The previous prime is 613749677. The next prime is 613749713. The reversal of 613749707 is 707947316.

It is a cyclic number.

It is not a de Polignac number, because 613749707 - 2²⁴ = 596972491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (613749767) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 719093 + ... + 719945.

It is an arithmetic number, because the mean of its divisors is an integer number (40722990).

Almost surely, 2^613749707 is an apocalyptic number.

613749707 is a deficient number, since it is larger than the sum of its proper divisors (37818133).

613749707 is a wasteful number, since it uses less digits than its factorization.

613749707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1502.

The product of its (nonzero) digits is 222264, while the sum is 44.

The square root of 613749707 is about 24773.9723702114. The cubic root of 613749707 is about 849.8268191588.

The spelling of 613749707 in words is "six hundred thirteen million, seven hundred forty-nine thousand, seven hundred seven".