60861649 has 16 divisors (see below), whose sum is σ = 67806720. Its totient is φ = 54362880.

The previous prime is 60861631. The next prime is 60861653. The reversal of 60861649 is 94616806.

60861649 = 477² + 478² + ... + 662².

It is a cyclic number.

It is not a de Polignac number, because 60861649 - 2¹⁵ = 60828881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (60861149) 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, 26842 + ... + 29020.

It is an arithmetic number, because the mean of its divisors is an integer number (4237920).

Almost surely, 2^60861649 is an apocalyptic number.

It is an amenable number.

60861649 is a deficient number, since it is larger than the sum of its proper divisors (6945071).

60861649 is a wasteful number, since it uses less digits than its factorization.

60861649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2280.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 60861649 is about 7801.3876329791. The cubic root of 60861649 is about 393.3518873912.

The spelling of 60861649 in words is "sixty million, eight hundred sixty-one thousand, six hundred forty-nine".