612542645 has 16 divisors (see below), whose sum is σ = 863557632. Its totient is φ = 411216960.

The previous prime is 612542639. The next prime is 612542687. The reversal of 612542645 is 546245216.

It is not a de Polignac number, because 612542645 - 2⁴ = 612542629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 427637 + ... + 429066.

It is an arithmetic number, because the mean of its divisors is an integer number (53972352).

Almost surely, 2^612542645 is an apocalyptic number.

612542645 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

612542645 is a deficient number, since it is larger than the sum of its proper divisors (251014987).

612542645 is a wasteful number, since it uses less digits than its factorization.

612542645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856732.

The product of its digits is 57600, while the sum is 35.

The square root of 612542645 is about 24749.5988856385. The cubic root of 612542645 is about 849.2693351875.

The spelling of 612542645 in words is "six hundred twelve million, five hundred forty-two thousand, six hundred forty-five".